Ch 2 Question Preview (ID: 4482)


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For any pure substance, the boiling point and melting point will always
a) remain constant
b) change as the ambient temperature changes
c) change as the fuel source changes
d)

Which of the following is an example of a chemical change
a) ice melting
b) pounding gold into a coin
c) paint fading
d) atom

Digesting food is an example of
a) physical change
b) chemical change
c) change of state
d) buoyancy

A substance that cannot be broken down into simpler substances is a(n)
a) compound
b) mixture
c) element
d) atom

You put a spoonful of salt into 1 L of water and stir. The reulting liquid is an example of a(n)
a) pure substance
b) homogeneous mixture
c) heterogeneous mixture
d) immiscible mixture

Which of the following is an example of a chemical property
a) reactivity with oxygen
b) solubility in water
c) density
d) color

Which of the following is an example of a physical change
a) dissolving salt in water
b) cooking an egg
c) burning wood into charcoal
d) rusting iron

Sound is not made of matter because it has
a) no mass
b) no volume
c) no mass or volume
d)

A substance that is made of atoms of more than one type chemically bound together is called a(n)
a) mixture
b) compound
c) element
d) mixture

When two or more pure substances are blended together, the result is a(n)
a) mixture
b) compound
c) molecule
d) element

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