Heat transfer and thermal equilibrium | Thermodynamics | AP Chemistry | Khan Academy
A1 A2 B1 B2 C1 C2
right
US / raɪt /
•UK / raɪt /
- adjecitve
- Correct or true
- The south side of you looking at the rising sun
- adverb
- Exactly in a place or time
- Being appropriate for a particular event
- In a straight or direct manner
- noun
- Something you are legally or morally allowed to do
- Ideal of what is just and good
- Political view based on conservatism
- verb
- To fix something previously wrong or unjust
- To make upright, as a boat that has turned over
touch
US / tʌtʃ /
•UK / tʌtʃ /
- noun
- Certain way of doing that makes something special
- A small amount of something
- Feeling of a surface
- verb
- To affect feelings, especially by causing sympathy
- To be next to each other with no space between
- To get involved with (used in negative)
- To feel an object with your fingers, etc.
tell
US / tel /
•UK / tɛl /
- verb
- To (strongly) advise a person to do something
- To be able to guess
- To say or communicate information to someone
- To inform, but without speaking; indicate
- To have a negative effect on someone
- To order someone to do something; command
- To recognize something based on certain signs
- To report something to an authority
- To explain something or teach someone something
square
US / skweə(r) /
•UK / skwɛr /
- adjecitve
- Being fair or honest
- Multiply a number by itself e.g. 2x2 or 6x6
- noun
- Shape with 4 equal length sides and 4 equal angles
- The result of multiplying Length by the width
- Open public area in the middle of the town
- verb
- To make something balance or be equal
- To multiply a number by itself, e.g. 2x2 or 6x8
- To straighten the edge to form a four-sided shape
second
US / 'sekənd /
•UK / ˈsɛkənd /
- adjecitve
- 2nd; the one following first
- noun
- Unit of time; one sixtieth of a minute
- Short period of time that you wait for someone
- (Do) soon
what
US / wɒt /
•UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /
- pronoun
- Thing or things that; the same kind as
- Used to emphasize something you are about to say
- adjecitve
- Used to refer to a particular amount, or number
- Used to place emphasis on a particular quality
- adverb
- To a certain degree
- determiner
- Question words used for asking for information
- exclamation
- Used to express excitement, shock, or surprise
- Used to ask people to repeat something they said
that
US / ðæt /
•UK / ðæt, ðət /
- adjecitve
- The person or thing being talked about
- Used to identify something both the speakers know
- adverb
- Used to reinforce adjectives and adverbs
- To such a degree
- conjunction
- Used to connect a noun clause
- Used to introduce an adverbial clause
- Used to introduce a noun clause
- determiner
- Used as a noun to refer to something
- pronoun
- Referring an object far away
- Used to refer to the relative pronoun ‘which’
energy
US / 'enədʒɪ /
•UK / ˈɛnədʒi /
- noun
- Physical or mental strength
great
US / ɡreɪt /
•UK / ɡret /
- adjecitve
- Very large in size
- Very important
- Very good; fantastic; wonderful
- adverb
- Very good; better than before
- noun
- Successful and well-admired person
mean
US / mi:n /
•UK / min /
- adjecitve
- Being good at
- Nasty; unkind
- Not liking to spend money; cheap; stingy
- noun
- Average of a set of numbers
- verb
- To express a particular idea or thought
- To intend to do something in particular
- To have a particular meaning or value
block
US / blɒk /
•UK / blɑk /
- noun
- Solid piece of material used for building
- A piece of wood, chocolate etc.
- Hard piece of wood, stone etc. with straight edges
- Building made up of offices or apartments
- Area of a city divided by four streets
- verb
- To stop from going forward or making progress
each
US / i:tʃ /
•UK / itʃ /
- determiner
- Every one of two or more things
- pronoun
- Per one person or thing
first
US / fɜ:st /
•UK / fɚst /
- adjecitve
- 1st; Coming before all others in time or place
- noun
- Something that has not happened before
- Position of the winner of a competition
other
US / 'ʌðə(r) /
•UK / ˈʌðər /
- adjecitve
- A thing different from that mentioned
- determiner
- (Something) else; not the first (one)
- pronoun
- Being the one and only thing of that category
one
US / wʌn /
•UK / wʌn /
- pronoun
- You; we; people in general; someone
- The thing or person previously referred to
- adjecitve
- Used to refer to people generally
- Being a strong example of (something mentioned)
- number
- Number 1
than
US / ðən /
•UK / ðən /
- conjunction
- Used to compare two things that are not equal
half
US / hɑ:f /
•UK / hæf, hɑf /
- adjecitve
- Not complete
- adverb
- Partly; somewhat
- noun
- One of two equal periods of game time in a sport
- The part you get when one is divided into two;
contact
US / 'kɒntækt /
•UK / ˈkɑnˌtækt /
- adjecitve
- Touching or feeling something
- noun
- Touching or feeling something
- Object that allows electricity to run through it
- Communication with someone or something
- People who can give you information, introductions
- verb
- To get in touch with someone
this
US / ðɪs /
•UK / ðɪs /
- adjecitve
- Used to indicate something already been discussed
- Used to indicate something happening around now
- adverb
- An indication by a physical motion or gesture
- A specific amount of
- determiner
- Person, thing, or idea near you
- pronoun
- Person, thing that has already been discussed
average
US / 'ævərɪdʒ /
•UK / ˈævərɪdʒ, ˈævrɪdʒ /
- adjecitve
- Typical or normal; usual; ordinary
- noun
- Total of numbers divided by the number of items
- verb
- To add numbers then divide by the number of items
make
US / meɪk /
•UK / mek /
- noun
- Product made by a particular company; brand
- verb
- To arrange or prepare something e.g. dinner
- To get to (a place) on time
- To gain the status of (teacher, lawyer, etc.)
- To create something by putting things together
- To earn a certain amount of money at a job
- To cause or force a person to do something
- To cause something to happen or be formed
also
US / 'ɔ:lsəʊ /
•UK / ˈɔlso /
- adverb
- In addition; too; in a similar way
little
US / 'lɪtl /
•UK / ˈlɪtl /
- adjecitve
- Being short in length of time
- Not great in size, amount, or degree; small
- Being very young or younger than others
- adverb
- By an amount or degree that is not very much
- Not often; rarely
- noun
- A person's name
let
US / let /
•UK / lɛt /
- verb
- To allow someone to do something
- Introducing a suggestion to do something together
- To rent a house, etc. to others
material
US / məˈtɪəriəl /
•UK / məˈtɪriəl /
- adjecitve
- Relevant; (of evidence) important or significant
- Belonging to the world of physical things
- noun
- Cloth; fabric
- Supplies or data needed to do a certain thing
- Substance from which a thing is made of
the
US / ðə /
•UK / ðə /
- article
- Used to refer to something already mentioned
- Used to show there is only one of something
- determiner
- Used to describe all of a family
cooler
US / ˈku:lə(r) /
•UK / ˈkulɚ /
- adjecitve
- More cool than
- Being more smart or stylish than others
- noun
- A box to keep things such as food, drink cool
leave
US / li:v /
•UK / liv /
- noun
- Permission to do something
- Vacation time; time off work
- verb
- To go away from; depart
- To gift property to someone after you die
- To allow something to continue happening
- To let something remain unused or available
- To let something or someone remain somewhere
where
US / hwɛə /
•UK / hwɛr, wɛr /
- conjunction
- At or in the place which
- In whatever place
- pronoun
- Word you use to ask the location of something
hot
US / hɒt /
•UK / hɑ:t /
- adjecitve
- Angry or excited
- Being very good at something
- Having a high temperature
- Popular and causing a great deal of excitement
- Attractive in a sexually exciting way
- (Of food) very spicy
- Stolen; dangerous to buy or trade in
from
US / frəm /
•UK / frʌm, frɑm,frəm /
- preposition
- Starting at a particular place, time or level
temperature
US / ˈtemprətʃə(r) /
•UK / ˈtɛmpərəˌtʃʊr,-tʃɚ,ˈtɛmprə- /
- noun
- When you your body heat is above normal
- How hot or cold something is, e.g. the weather
put
US / pʊt /
•UK / pʊt /
- phrasal verb
- to make a light stop shining by pressing or moving a switch
- verb
- To move or place a thing in a particular position
- To rate something in importance or value
- To write or say something in a certain manner
two
US / tu: /
•UK / tu /
- number
- 2
and
US / ənd /
•UK / ənd, ən,ænd /
- conjunction
- Used to refer to two or more things
- Plus; in addition; on top of that
- Used to introduce an action that follows another
until
US / ənˈtɪl /
•UK / ʌnˈtɪl /
- conjunction
- Up to; to a time when something happens
- preposition
- Before (a specific time)
low
US / ləʊ /
•UK / lo /
- adjecitve
- Having a small quantity, supply, or amount
- Being unhappy or unpleasant in attitude
- Not high; being near the ground, or bottom
- (Of a voice, sound) being soft; quiet
- noun
- Situation of not having a lot of something
indicate
US / ˈɪndɪkeɪt /
•UK / ˈɪndɪˌket /
- verb
- To show something; direct attention to; point out
- To represent something using a symbol or sign
next
US / nekst /
•UK / nɛkst /
- adverb
- The one that follows another in time or order
- At a time or place directly after the present one
- noun
- The one that follows after
- adjecitve
- Immediately after the previous one
- First occurrence after the present one
have
US / həv /
•UK / hæv /
- verb
- To drink, smoke, eat or use something
- To experience the effects of something
- To organize an event, or join in an activity
- To own, possess, or hold something
- To cause to happen or produce a particular effect
transfer
US / træns'fɜ:(r) /
•UK / trænsˈfɚ /
- noun
- Moving to a different place, job, or school
- Act of giving the right to a property to another
- Picture that is pressed to copy it onto something
- Use of ideas or skills in a different situation
- Ticket allowing you to get on another plane, bus
- verb
- To move to a different place, job or school
- To give someone an illness through contact
- To give someone your right to a property
- To move something from one place to another
- To use ideas or skills in a different situation
- To get off a plane, bus etc. and get on another
sample
US / ˈsɑ:mpl /
•UK / ˈsæmpl /
- noun
- A small quantity of something used as a taster
- verb
- To try (e.g. food, drink), to see if you like it
with
US / wɪð /
•UK / wɪð, wɪθ /
- preposition
- As an employee of a certain company
- Against something or someone
- By using something as a means
- Due to; because of
- Including
- Possessing as a feature
- Related to
- (Of the manner/attitude by which you do something)
- Used to express that people or things are together
notice
US / 'nəʊtɪs /
•UK / ˈnotɪs /
- noun
- Time by when you must leave, e.g. if you are fired
- Paper with an announcement, e.g. pinned to a board
- verb
- To become aware by sight, touch, or hearing
can
US / kæn /
•UK / kən,kæn /
- noun
- A metal container for storing food
- other
- Able to; have the skill to; have the time to
- verb
- To have permission to
- To be possible to do
- To preserve food by sealing it in a metal container
helium
US / ˈhi:liəm /
•UK / ˈhiliəm /
- noun
- Light, colorless gaseous element with no smell
final
US / ˈfaɪnl /
•UK / ˈfaɪnəl /
- adjecitve
- That will not be changed; permanent
- Being the last thing in a series
- noun
- Last game in a series in a competition
proportional
US / prəˈpɔ:ʃənl /
•UK / prəˈpɔ:rʃənl /
- adjecitve
- Having a size appropriate to the size of another
same
US / seɪm /
•UK / sem /
- adjecitve
- Being equal in quality and amount
- Identical; not different
- Not changing; constant
slow
US / sləʊ /
•UK / sloʊ /
- adjecitve
- Lacking activity, busyness or excitement
- (Clock) showing time earlier than the actual time
- Having difficulty understanding simple things
- Moving or happening without speed; not fast
- verb
- To move, with less speed than before
- To move or go without much speed
box
US / bɒks /
•UK / bɑ:ks /
- noun
- A marked area of a baseball field
- A container with four straight sides and a lid
- Area of seating in a theater separated from others
- A 4 sided container or shape printed on a page
- Entire amount of something inside a container
- verb
- To strike someone on the side of the head
- To pack an object in a six-sided container
- To fight with gloved hands as a sport
our
US / 'aʊə(r) /
•UK / aʊr /
- determiner
- Belonging to us
not
US / nɒt /
•UK / nɑt /
- adverb
- Word indicating the negative
- (Used to form the negative of verbs)
vector
US / 'vektə(r) /
•UK / ˈvɛktɚ /
- noun
- Math a quantity that has both size and direction
equal
US / 'i:kwəl /
•UK / ˈikwəl /
- adjecitve
- Same in shape, size, or number
- verb
- To add up or be the same as
now
US / naʊ /
•UK / naʊ /
- adverb
- At the present time or moment
- Right away or in the next possible moment
- Used to refer to something that just happened
- Time between the present and a moment in the past
- conjunction
- Resulting from or because of something
both
US / bəuθ /
•UK / boθ /
- determiner
- Used to refer to two things at the same time
- pronoun
- Used to refer to two things at the same time
kinetic
US / kɪˈnetɪk /
•UK / kɪˈnɛtɪk, kaɪ- /
- adjecitve
- Of or relating to movement
result
US / rɪ'zʌlt /
•UK / rɪˈzʌlt /
- noun
- Something produced through tests or experiments
- Final score of a competition, election or game
- verb
- To be the outcome of other causes and effects
space
US / speɪs /
•UK / spes /
- noun
- Empty area kept for a specific reason, like a car
- Empty area with nothing in it
- Area in the sky where the stars are
- Area between written words on a page
- verb
- To make a certain distance or time between
travel
US / ˈtrævl /
•UK / ˈtrævəl /
- noun
- Going to other places, esp. distant places
- verb
- To go to a place that is far away
whereas
US / ˌweərˈæz /
•UK / hwɛrˈæz, wɛr- /
- conjunction
- Taking into consideration the fact that
length
US / leŋθ /
•UK / leŋθ /
- noun
- Distance from one end of a pool to the other
- Measurement of distance or of time
atom
US / 'ætəm /
•UK / ˈætəm /
- noun
- Smallest bit that matter can be broken down into
between
US / bɪˈtwi:n /
•UK / bɪˈtwin /
- preposition
- From one person, thing, or place, to another
- In the space that separates two objects
- Among two or more people who share something
they
US / ðeɪ /
•UK / ðe /
- pronoun
- Two or more people, animals, or things
bit
US / bɪt /
•UK / bɪt /
- noun
- Device put in a horse's mouth to control it
- Small piece of something
- verb
- (E.g. of fish) to take bait and be caught
look
US / lʊk /
•UK / lʊk /
- noun
- Person's beauty or physical attractiveness
- Particular style of dress, clothes, or appearance
- The way someone, something appears to be
- Act of searching for or examining something
- verb
- To appear to be; seem
collision
US / kəˈlɪʒn /
•UK / kəˈlɪʒən /
- noun
- Act of crashing into someone or something else
bring
US / brɪŋ /
•UK / brɪŋ /
- verb
- To take or go with someone to a place
move
US / mu:v /
•UK / muv /
- noun
- Act of moving a playing piece in chess, etc.
- An action; doing something
- Step taken to achieve a goal
- verb
- To cause someone to have certain emotions
- To cause something to change to a different place
- To change where people live or a business operates
- To take action to do or achieve something
fast
US / fɑ:st /
•UK / fæst /
- adjecitve
- In a way that is difficult to move or change
- Moving or able to move quickly
- Showing time that is later than the actual time
- adverb
- With a great deal of speed
- noun
- Period of time when a person chooses not to eat
- verb
- To refuse food for a long time
flow
US / fləʊ /
•UK / flo /
- noun
- Amount of something that moves through an area
- verb
- To move steadily and easily in a certain direction
equilibrium
US / ˌi:kwɪˈlɪbriəm /
•UK / ˌikwəˈlɪbriəm, ˌɛkwə- /
- noun
- A state of balance or harmony
- Calm, quiet, undisturbed emotional state
particle
US / ˈpɑ:tɪkl /
•UK / ˈpɑrtɪkəl /
- noun
- Adverb or preposition that joins with a verb
- Tiny piece or quantity of something
continue
US / kən'tɪnju: /
•UK / kənˈtɪnju /
- verb
- To do something without stopping, or after pausing
- To start doing again after a break, pause, or stop
here
US / hɪə(r) /
•UK / hɪr /
- adverb
- In this place; at this location, position or time
heat
US / hi:t /
•UK / hit /
- noun
- State of anger, excitement, or arguing
- Particular temperature at which to cook something
- High temperature
- One of series of races to find the finalists
- Hot temperature, conditions, or weather
- verb
- To make hot or hotter
equation
US / ɪˈkweɪʒn /
•UK / ɪˈkweʒən, -ʃən /
- noun
- Mathematical statement showing things to be equal
- Complex set of different facts, ideas or issues
object
US / 'ɒbdʒɪkt /
•UK / ˈɑbdʒɪkt /
- noun
- Something you can see or touch, but is not alive
- Goal or purpose of a particular plan or activity
- The thing that the action of a verb acts upon
- verb
- To disagree; to protest against an idea or plan
for
US / fə(r) /
•UK / fɔr,fə /
- preposition
- Used to show the purpose, or need of something
lower
US / 'ləʊə(r) /
•UK / ˈlaʊɚ, laʊr /
- adjecitve
- In a position more near the bottom
- verb
- To move something downward to the ground
piece
US / pi:s /
•UK / pis /
- noun
- A counter in a board game
- Small part of something larger
- verb
- To put items together to assemble something
start
US / stɑ:t /
•UK / stɑrt /
- noun
- First time or place that a thing exists; beginning
- First opportunity to achieve something, e.g. a job
- Sudden action or movement because you are scared
- other
- Beginning of something in place or time
- verb
- To do, be or happen for the first time; begin
- To turn something on
since
US / sɪns /
•UK / sɪns /
- adverb
- At a point before the present time
- conjunction
- For this reason; because
- preposition
- From the time in the past that
velocity
US / və'lɒsətɪ /
•UK / vəˈlɑsɪti /
- noun
- Speed in a given direction
cold
US / kəʊld /
•UK / kold /
- adjecitve
- Having a very low temperature
- Being unfriendly or lacking emotion
- noun
- Illness of sneezing, coughing, and a sore throat
mass
US / mæs /
•UK / mæs /
- noun
- Religious ceremony in some Christian churches
- Large amount or number of something
- Main or largest part of something
- Large number of people considered as a whole
- Amount of matter that an object has
- verb
- To gather people or things into a large group