Matter/chem And Phys Reactions Question Preview (ID: 43983)


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which is a physical change
a) changing shape
b) burning
c) cooking
d) mixing chemicals for explosions

which is a chemical change
a) baking a cake
b) breaking glass
c) changing shape
d) ripping paper

this is less dense than water
a) oil
b) all rocks
c) large tree
d) elephants

which is the densest?
a) honey
b) oil
c) water
d) corn syrup

Which is a chemical change?
a) Burning wood AND digesting Food
b) cutting paper
c) digesting food
d) burning wood

Which is NOT evidence that a chemical change has taken place
a) changes into a solution
b) change in color
c) takes in or gives off heat
d) a smell is produced

this is a chemical change
a) digesting food
b) making a paper airplane
c) chewing food
d) squishing play dough

this is a physical change
a) squishing play dough
b) frying an egg
c) baking a cake
d) lighting a candle

mixtures are always this (like salt and water, sugar and water, making lemonade)
a) physical changes
b) chemical changes
c) very bad
d) always a food or drink

molecules are most spread apart in this state
a) gas
b) liquid
c) solid
d) anything at absolute 0 temperatures

the term for the amount of space something takes up
a) volume
b) mass
c) density
d) matter

What is the best description for something that goes through a chemical change
a) a new substance is created
b) The physical properties of a substance are changed.
c) A substance goes through a physical change.
d) The type of matter in the substance remains unchanged.

What term is used to identify a mixture that has the same composition throughout?
a) solution
b) compound
c) element
d) mixture

If you place baking soda on an unknown liquid, and the liquid begins to fizz, you can conclude that the liquid is MOST LIKELY
a) an acid
b) a base
c) toxic
d) dangerous

Which term or phrase best describes what happens when a tomato rots?
a) chemical change
b) physical change
c) solid change
d) evaporation

chemical or physical? (mixing sugar and water)
a) physical change
b) chemical change
c) evaporation
d) no change

A cup holds 120 grams of liquid water and 100 grams of ice. What is a reasonable mass for the water in the cup after the ice melts?
a) 220 grams
b) 500 grams
c) 100 grams
d) 20 grams

What happens to water as it evaporates?
a) it's mass will always stay the same, but volume will increase
b) it's mass becomes less
c) it's mass becomes more
d) it becomes frozen molecules again

Riley and Jill are studying what happens to matter when it changes state. They found this list of statements. Which of these statements is true?
a) When matter changes state, its mass remains the same.
b) When matter changes state, its mass changes.
c) When matter changes state, its boiling point might also change.
d) When matter changes state, the space between particles in the matter stays the same.

Physical of Chemical cooking an egg?
a) chemical
b) physical
c) you can't tell
d) it can be both

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