Answers2003350 Chemistry HONORS Sem 1 - MarezElectrons and the Periodic Table

Changes in Matter Answers

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5

Which of these is a chemical property of a substance?

A
texture
B
ductility
C
reactivity
D
conductivity
6

Which statement describes a physical property of copper?

A
It reacts with strong acids.
B
It can be reshaped by a force.
C
It ignites at high temperatures.
D
It can combine with oxygen.
7

Which is an example of a chemical change?

A
water evaporating from a puddle
B
cloth tearing when pulled
C
wood forming sawdust when cut
D
bread baking in an oven
8

Which of these is an example of investigating an intensive property?

A
weighing sand in a bag
B
measuring the length of wire
C
determining if a rock is magnetic
D
recording the volume of water in a cylinder
9

Which of these is an example of a physical change?

A
sugar dissolving in warm water
B
iron rusting in the presence of moist air
C
wood burning in the presence of oxygen
D
baking soda reacting with acid to form a gas
10

A geochemist examines a piece of metal that he found in the soil. He performs tests to identify the metal from its density, electrical conductivity, and melting point. Which statement best describes his investigation?

A
He is identifying the metal using physical properties only.
B
He is identifying the metal using chemical properties only.
C
He is identifying the metal using physical properties and chemical properties.
D
He is identifying the metal using neither physical properties or chemical properties.

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Changes in Matter Answers — 2003350 Chemistry…