Lesson 15 - Physical And Chemical Changes: Question Preview (ID: 28070)


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A characteristic that can be observed or measured without changing the identity of a substance. (Mass, volume, color, shape, hardness, magnetism, weight, and state)
a) physical property
b) chemical property
c) reactivity
d) combustion

A characteristic that determines how a substance will interact with other substances during a chemical reaction. (Ability to burn or rust)
a) physical property
b) chemical property
c) precipitate
d) combustion

How likely the atoms or molecules of one substance are to form bonds with the atoms or molecules of other substances.
a) Reactivity
b) Physical change
c) Chemical change
d) Combustion

Alters the physical properties of a substance without changing the identity of the substance.
a) Physical Change
b) Chemical Change
c) Reactivity
d) Combustion

Ice melting to water is an example of
a) Physical Change
b) Chemical Change
c) Reactivity
d) Precipitate

Occurs when one substance changes into a new substance with different properties
a) Physical change
b) Chemical change
c) Precipitate
d) Combustion

Burning a match is an example of a
a) Physical change
b) Chemical change
c) Reactivity
d) Precipitate

A solid formed by a chemical reaction that takes place in a solution (soap scum)
a) Precipitate
b) Reactivity
c) Deposition
d) Vaporization

Chemical reaction in which oxygen combines with certain other substances, and heat and light are given off.
a) Combustion reaction
b) Reactivity
c) Precipitate
d) Physical change

Which of the following is an example of a chemical change?
a) water evaporating
b) carbon joining with oxygen to form carbon dioxide
c) ice cream melting
d) a pencil breaking

What happens during a physical change?
a) New substances are formed.
b) The identity of the substance is changed.
c) A chemical reaction occurs.
d) A substance may look different but does not change its identity.

What two quantities must be known to calculate the density of a sample of matter?
a) color and mass
b) mass and volume
c) length and mass
d) solubility and mass

Which is a chemical property?
a) boiling point
b) freezing point
c) reactivity
d) hardness

Bubbles, a change in color, the release of heat, and giving light are all signs of
a) Chemical reaction
b) Physical change
c) Precipitate
d) Chemical property

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