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physical and chemica
6TH grade science
| question | answer |
|---|---|
| physical change involves changes in what? | state |
| what 4 sates can a material be? | gas, liquid, solid, plasma |
| how can you determine if a physical change has taken place | changes form or shape |
| what happens when something undergos a chemical change? | it turns into another material |
| what happens to gas during a chemical change? | it is either given off or taken in |
| signs of chemical change are ___ or ____ | realeasing water or giving off gas |
| changes in shape, color or texture are examples of | physical change |
| when a substance is turned into a whole new substance | chemical change |
| tells you the relationship between an object's mass and the space it takes up | density |
| what are the physical properties of a base? | bitter taste and slippery feel |
| physical change involves changes in what? acid | state |
| what 4 sates can a material be? | gas, liquid, solid, plasma |
| how can you determine if a physical change has taken place | changes form or shape |
| what happens when something undergos a chemical change? | it turns into another material |
| what happens to gas during a chemical change? | it is either given off or taken in |
| signs of chemical change are ___ or ____ | realeasing water or giving off gas |
| changes in shape, color or texture are examples of | physical change |
| when a substance is turned into a whole new substance | chemical change |
| tells you the relationship between an object's mass and the space it takes up | density |
| what are the physical properties of a base? | bitter taste and slippery feel |
| T or F, a food that tastes sour is likely to contain a base | false |
| T or F a PH of 4 is less acidic than a Ph of6 | false |
| T or F odor is an example of physical property | true |
| cracks in the sidewalk in winter are a result of physical change | true |
| a newspaper turning yellow after being left in the sun is evidence of what kind of change | chemical |
| ice melting, glass breaking, mowing the lawn are examples of | physical change |
| at extremely high temperatures (like in the stars) matter is most likely to exist in this state | plasma |
| all acids have a Ph of? | less than 7 |
| all bases are | slippery to the touch |
| is a change in state a sign of chemical change? | no |
| if dry ice is left at room temperature, acarbon dioxide vapor forms. carbon dioxide is changing from what state to what state | solid to gas |
| if you wanted to lower the ph of a water solution, would you add ammonia, salt, water, or lemon juice | lemon juice |
| a substance with a PH of 4 is classified as | acid |
| a substance that registers 10 on the PH scale is classified as | base |
| the evaporation of water is an example of a change in | physical STATE |
| measures how acidic or basic a substance is | PH scale |
| why is it safe to eat salt, which is made from sodium (burns in water) and chlorine (a posonous gas) | because when they are combine they are stable and have different properties than their separate components |
| what is the fifth state of matter | BEC |
| what is the real name of BEC | bose-einstien condensate |
| at what temperature would you find a state of BEC | ABSOLUTE ZERO |
| Which is easier to compress, liquids or gasses? | gasses |
| when a liquid changes to a gas, the process is called _______ | evaporation |
| which state of matter is present in neon signs? | gas |
Created by:
victisha
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