Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Change of State

TermDefinition
Physical change no new substance is formed, but changes may include a change of shape/form, expansion or contraction or a change of state (between solid, liquid or gas).
Change of shape or form may include, bending, stretching, crushing, twisting or compression.
Expansion in many cases when solids and liquids are heated, they take up more space due to the higher kinetic energy of the particles (eg the air in a hot air balloon expands).
Contraction usually when a gas, liquid or solid is cooled, it takes up less space as the particles have less energy (becomes more dense - cold air sinks eg leaks out of the bottom of an open refrigerator door).
Changes of state if enough heating or cooling is applied to a substance, it may either melt (solid to liquid), evaporate (liquid to gas), condense (gas to liquid) or freeze (liquid to solid).
Sublimation direct change of a substance from solid to gas (dry ice).
Deposition direct change of a substance from a gas to a solid (water vapour turning to ice in clouds without becoming a liquid first).
Evaporation occurs at all temperatures, but at a faster rate as the temperature of the fluid increases.
Boiling point the temperature at which bubbles form in a substance due to heating
Condensation water vapour in the air condenses onto cold surfaces - the ability of the air to carry moisture is reduced as the temperature drops.
Mixing when two substances are mixed but no new substance is formed (a packet of M & Ms)
Dissolving when a solid (solute) is dissolved into a liquid (solvent) a solution is formed eg salt or sugar in water. No new substance is formed and the sugar/salt can be extracted from the water by evaporation.
Compression Only gases can be compressed - as there are spaces available between the molecules. Liquids and Solids cannot be compressed.
Melting Solid changes state to a liquid - energy is added. eg Ice in the sun melts to form water
Created by: elisha.steffen
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards