An intensive property

does not depend on the size of the sample.

The chemical formula of a compound indicates

the relative proportions of the elements in the compound.

What distinguishes a substance from a mixture?

Composition of substances is fixed, while mixtures can vary.

What happens to matter during a chemical reaction?

Matter is neither created nor destroyed.

What must occur for a change to be a chemical reaction?

A new substance must be formed.

studbud

Gen Chem Ch. 2 Review

19 termsStudBud Administration347 plays

Properties of matter, mixtures and substances, overview of periodic table

Flashcards19 cardsFPractice quizPHost liveL

Questions 19

Answers

1
An intensive property
does not depend on the size of the sample.
is a very strong property.
cannot be measured without changing the substance.
varies with the size of the sample.
2
Which of the following is a chemical change?
electrolysis of water
evaporation of water
freezing of water
distillation of water
3
Which state of matter takes both the shape and volume of its container?
both 2 and 3
liquid only
solid
gas only
4
When an iron nail is ground into powder, its mass _____.
stays the same
increases
cannot be determined
decreases
5
Which of the following is a physical change?
explosion
evaporation
rotting of food
corrosion
6
Which is a sign that a chemical reaction may be occurring?
change in color
increase in mass
decrease in mass
increase in volume
7
Which of the following is a physical property?
melting point
ability to rust
combustibility
explosiveness
8
A horizontal row of the periodic table is usually referred to as a
property
period
group
family
9
A substance that can be separated into two or more substances only by a chemical change is a(n)
element
mixture
solution
compound
10
Which of the following is a chemical property?
hardness
freezing point
ability to react with oxygen
color
11
An example of a homogeneous mixture is
distilled water
stainless steel
noodle soup
oxygen
12
A chemical change always results characteristically in a change of
shape
state
form
identity
13
A substance that is made up of more than one kind of atom
is an element.
can not be a compound.
may be a mixture.
none of these
14
The chemical formula of a compound indicates
the source of the elements in the compound.
how elements are joined in the compound.
the alchemy symbols for the elements in the compound.
the relative proportions of the elements in the compound.
15
What distinguishes a substance from a mixture?
Composition of substances is fixed, while mixtures can vary.
Mixtures are groupings of elements, and compounds are not.
Substances are compounds and mixtures are not.
Samples of the same subst. can have diff. intensive props.
16
Which state of matter has an indefinite shape, but a definite volume?
both 2 and 3
gas only
liquid only
solid
17
What happens to matter during a chemical reaction?
Matter is neither created nor destroyed.
Some matter is created.
Some matter is destroyed and some is created.
Some matter is destroyed.
18
What do chemical symbols and formulas represent, respectively.
elements and compounds
atoms and mixtures
compounds and mixtures
elements and ions
19
What must occur for a change to be a chemical reaction?
A new substance must be formed.
The change must involve a change in mass.
The change must involve a change in volume.
There must be a release of energy as heat.

Gen Chem Ch. 2 Review Flashcards | StudBud