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Physical Science Test 2 Canton Flashcards | StudBud
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Physical Science Test 2 Canton
Physical Science Test 2 Canton
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1
Which one of these is a pure substance
Magnesium (Mg)
Trail mix
Soil
Brass (Cu + Zn)
2
What is a reason why physical properties are important
They can tell you what substances they can mix with
They can help you figure out what a substance is used for
They can help you create new substances
They can help you be observent
3
A mixture where its parts aren't easily sperated, where it is evenly distributed throughout
element
heterogenous
homogenous
compound
4
The best definition for compound is
a substance that can't be broken down into other substances
multiple atoms put together
many atoms of one type of element
multiple elements put together
5
Which one of these is a chemical change
Rusting metal
Mixing candy
Shredding paper
Sharpening a pencil
6
Which one of these is a homogenous mixture
salad
Iron (Fe)
salt water
sand in water
7
Chemical changes can be reversed by physical changes
False
True
8
Matter is
has volume
has weight and length
has mass and volume
has mass
9
The ability to combine with another substance is
Reactivity
Flamability
Chemistry
Physical
10
This is a model of
a pure compound
a mixture of two compounds
a mixture of two elements
a pure element
11
What characteristic do pure substances and mixtures share
can be homogenous
always contains compounds
components aren't evenly distributed
only made of one thing
12
What is a reason why physical properties are important
They can help you identify a substance
They tell you if a substance is homo or heterogenous
They tell you if a substance is a compound or element
They can help you see how a substance changes
13
Si is a ____________
Compound
Molecule
Element and molecule
Element
14
What type of property is not easy to observe
Physical
Chemical
15
Physical changes can not be reversed
True
False
16
Which one is NOT an element
Cl
He
CH
Br
17
A mixture where its parts are easily seperated, where it's not evenly distributed throughout
homogenous
compound
element
heterogenous
18
This is a model of
a pure element
a mixture of two elements
a pure compound
a mixture of two compounds
19
This is a model of
a pure compound
a pure element
a mixture of two compounds
a mixture of two elements
20
A physical change changes the identity of the substance
False
True
21
Which one of these is a pure substance
Sugar and water
C2H2
Air
NaCl + H2O
22
Which one of these is NOT a physical property of metal
Silver
Solid at room temperature
conduct electricity
Shiny
23
This is a model of
a mixture of two compounds
a mixture of two elements
a pure element
a pure compound
24
Which one of these is NOT a pure substance?
H2O
NaCl
Hydrogen
Lemonade
25
NaCl is a _____________
element and molecule
molecule
compound and molecule
compound
26
Which one of these is a mixture
Lemonade
H2O
Salt
Cu
27
Which one of these is NOT an example of a physical change
ice cream melting
Shredding paper
Cooking an egg
Boiling water
28
The BEST definition of molecule is
one atom by itself
multiple elements put together
a compound
multiple atoms put together
29
Which one of these is NOT a physical property
Shape
State
Color
Reactivity
30
O
2
is a ____________
Element
Molecule
Molecule and element
Compound and molecule
31
characteristics that can be observed without changing the identity of a substance
Heterogenous
Homogenous
physical property
chemical property
32
Which one is NOT a characteristic of a pure substance
Heterogenous
Can be a solid liquid or gas
Homogenous
Made up of elements or compounds
33
What is a pure substance that can't be broken down into other substances
Chemical
Compound
Element
Mixture
34
Chemical changes can rarely be reversed
True
False
35
Which one of these is a mixture
H2
H2O + Zn
NaCl
He
36
Which one is NOT a characteristic of a mixture
Each part retains its own identity
Made of only one thing
Can be heterogenous
Can be homogenous
37
What is the smallest unit of an element that keeps its chemical identity
element
compound
atom
proton
38
A chemical change changes the identity of the substance
False
True
39
Which one of these is a physical change
Baking a cake
Mixing sand with gravel
Rotting fruit
Photosynthesis
40
Which one of these is NOT a physical property
Texture
Flamability
Magnetism
Melting point
41
The ability to burn is
Compactability
Flamability
Physical
Reactivity
42
Which of these is NOT a compound
H2
HCl
CO2
NaCl
43
describes how a substance changes into another substance
physical property
Heterogenous
Homogenous
chemical property
44
Which one of these is a heterogenous mixture
Muddy water
aluminum (Al)
air
pure water (H2O)
