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Matter and Change
Matter and Change
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Ch. 2 Pearson Chemistry
Flashcards
40 cards
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Practice quiz
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Questions
40
Answers
1
What is a color on this periodic table that represents metals?
pink
peach
all of these sections are metals
red
2
Which element is in Group 3, Period 2?
Magnesium (Mg)
there isn't one
Scandium (Sc)
Yttrium (Y)
3
How are metalloids described?
all of these
only exist in the solid phase
semiconducting
properties of both metals and nonmetals
4
How would you classify hydrogen (H)?
compound
metalloid
metal
nonmetal
5
What does it mean if you see a triangle over/under an arrow in an equation?
heat is required
doesn't mean anything...just looks cool
the material must be solid
a catalyst is required
6
What is matter?
anything that takes up space
anything that has mass
the things we study in chemistry
all of these
7
Is a melting Popsicle a physical or chemical change?
chemical
both physical and chemical
neither--butter can't melt
physical
8
What type of element is bromine (Br, atomic number 35)?
nonmetal
metal
metalloid
invisible
9
Is the combustion of fuel a physical or chemical change?
both physical and chemical
chemical only
it's not a change
physical only
10
What are the two types of mixtures called?
even or uneven
trick question--there are three types of mixtures
homozygous and heterozygous
homogeneous or heterogeneous
11
Which element is in Group 2, Period 4?
Ca (calcium)
C (carbon)
Sr (strontium)
Kr (krypton)
12
How can mixtures be separated?
based on physical properties
you cannot separate mixtures
based on chemical change
based on individual atom count
13
How would you characterize this property: TENDENCY TO RUST
chemical
physical
14
Which property(ies) might describe metals?
ductile
malleable
all of these
lustrous
15
Which of the following is a physical property?
texture
all of these are physical properties
color
mass
16
What does chemistry focus on studying?
the changes that matter goes through
energy changes of matter
all of these
matter
17
Which of the materials indicated is a product?
O2
H2O
CH4
CO2
18
Why do some element symbols not match their name (ex. why is sodium Na?)
No one knows--chemistry is crazy like that
Because there was a man named Sodium.
It isn't--sodium is So
The symbol matches the Latin name
19
Which of the following is an extensive physical property?
all of these are extensive physical properties
mass
length
volume
20
Which material listed below is a compound?
steel
brass
platinum (Pt)
zinc oxide (ZnO)
21
What does (aq) mean after a chemical formula?
aqueous (in water)
aquatic (in the ocean)
no such symbol
aqua colored
22
Which of the following is a chemical property?
hardness
melting point
mass
flammability
23
What could a molecule represent? For example, you could have a molecule of...
an element
a mixture
either an element or a compound
a compound
24
The smallest unit of an element that maintains the chemical identify of that element is
the atom
the compound
mass
hydrogen
25
If matter does not have a fixed composition, but can be arranged in a variety of ways, you have
a substance (element or compound)
a mixture (homogeneous or heterogeneous)
a miracle!
matter cannot do this
26
Which material(s) is/are a reactant?
H2O
CO2
O2
C6H12O6
27
What type of mixture is skim milk?
both heterogeneous and homogeneous
homogeneous
heterogeneous
it's a compound
28
If matter has a fixed composition, what is it classified as?
impossible
mixture (homogeneous or heterogeneous)
substance (element or compound)
an alloy
29
Which phase of matter would have particles far apart and rapidly moving?
any of these phases
gas
solid
liquid
30
What is the specific name for a homogeneous mixture that involves at least one base metal?
Metallica
metalloid
no special name
alloy
31
How would you characterize this property: WEIGHT
chemical
physical
32
How would you characterize this property? MELTING POINT
chemical
physical
33
Which of these symbols could possibly be the symbol for the ELEMENT phosphorus?
PH
PH2
ph
P
34
Which of these materials represents an element?
water (H2O)
scandium (Sc)
fire
steel
35
What do you call the simplest form of matter than cannot be chemically separated?
mixture
compound
alloy
element
36
Which of the following is not an intensive physical property?
20 pounds
boiling point 212o F
gray color
soft texture
37
What do gases and liquids have in common?
their particles are far apart
they have a definite volume
they take the shape of their container
they have nothing in common
38
Which of the following kinds of matter can be either homogeneous or heterogeneous?
elements
compounds
all of these
mixtures
39
What type of mixture is this sampling of vegetables?
homogeneous
heterozygous
it's not a mixture
heterogeneous
40
Which phase of matter has a definite shape and a definite volume?
all of these
liquid
gas
solid
