5th/7th Grade Matter Question Preview (ID: 39430)
First Test.
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what could you add to an unknown liquid to see if it is an acid or not?
a) baking soda or bean water
b) lots of heat
c) lots of ice
d) you don't need to add anything to it
when we put the penny in a vinegar and salt solution which explains why the penny became shiny?
a) the salt and vinegar took off some of the copper and the dirt
b) the salt and vinegar added an extra coat of copper to it
c) the salt and vinegar took off the zinc
d) the salt and vinegar only took off the dirt
. How does water change as it evaporates?
a) Its mass remains unchanged. Its volume increases, (or it takes up more space)
b) Its mass and volume decrease.
c) Its mass and volume increase.
d) Its mass increases. Its volume remains unchanged.
According to the conservation of mass law, Which of these statements is true?
a) When matter changes state, its mass remains the same.
b) when matter changes state, it's mass also changes
c) when matter boils it definitely changes mass
d) mass changes only when matter freezes
Which term or phrase best describes what happens when a tomato rots?
a) chemical change
b) physical change
c) new compounds are found
d) the mass changes
Which statement describes a difference between liquids and solids?
a) The particles in a solid are much closer together than the particles in a liquid.
b) solids have a definite volume and liquids do not have a definite volume
c) solids chang change temperatures easier
d) solids take the shape of their container and liquids do not
Which term names the smallest unit of a pure substance that has the properties of that substance?
a) element
b) compound
c) mixture
d) solution
What term is used to identify a mixture that has the same composition throughout?
a) solution
b) mixture
c) matter
d) compound
Which term names the type of matter made of just one kind of atom?
a) element
b) compound
c) molecule
d) solid
Which term means “a combination of two or more substances that keep their identities”?
a) mixture
b) solution
c) matter
d) compound
the term for anything that has mass and takes up space
a) matter
b) volume
c) density
d) mass
Which is the best description of what happens during a chemical reaction?
a) A new substance is formed during a chemical change
b) the matter remains unchanged
c) the physical appearance changes
d) it goes through a physical change
baking soda and vinegar is this type of reaction
a) chemical
b) physical
c) plain
d) spectacular
Alchemists were ancient chemists trying do what?
a) turn less valuable metals into gold
b) change gold into silver
c) change gold into less valuable metals
d) make pennies shiny
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