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5th - Chapter 10 C
Questions and answers from chapter 10, lessons one and two
| Question | Answer |
|---|---|
| how could snow disappear without making a puddle? | sublimation! |
| does a gas gain heat when it condenses? | no - condensation comes with cooling |
| what might happen if there were no spaces between sections of a sidewalk? | the sidewalk would break from thermal expansion and contraction |
| the temperature at which a substance melts is called its __________ | melting point |
| why wouldn't turning up the heat on the stove make boiling water cook things faster? | because liquid water can't get hotter than it is when it's boiling! |
| what kind of mixture is dusty air? | it's a suspension |
| what might happen if you mixed two suspensions? | you might get four layers! |
| how can you tell muddy water isn't a colloid? | because the dirt eventually settles to the bottom |
| why might fish not get enough oxygen in hot water? | because hot water can't hold as much dissolved oxygen as cold water |
| if two liquids boil at about the same temperature, would it be easy to separate them by distillation? | no, because it would be too easy to boil them both away at the same time! |
| a solution of metal is called an ___________ | alloy |
| a solution of sugar in water has a solubility limit. Do heterogenous mixtures have solubility limits? | nope- you can just make that mixture more chunky - like Ben & Jerry's Ice Cream! |
| How can matter change state? | by gaining or losing energy! |
| what happens to the temperature when matter is changing state? | the temperature stays the same |
Created by:
jewen
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