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WorksheetsUnit 1 Matter Review
Total questions: 72
Worksheet time: 1hrs 29mins
Name
Class
Date
1.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
c)
neither physical or chemical
2.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
3.
Is making salt water a physical or chemical change?
a)
physical
b)
chemical
4.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
freezing water
d)
sour milk
5.
When you break a cracker into pieces it is a
a)
Chemical change
b)
Physical change
c)
Chemical Weathering
d)
Physical Weathering
6.
The substances at the beginning of a chemical reaction are most accurately called
a)
products
b)
chemicals
c)
reactants
d)
enzymes
7.
Examples of physical change include
a)
melting, evaporating, condensing & freezing
b)
melting, burning & fire
c)
melting, freezing & burning
d)
melting, rusting & freezing
8.
Green bananas turning yellow on their own as they ripen.
a)
Chemical Change
b)
Physical Change
9.
A change in which NEW substances are formed.
a)
Chemical change
b)
Physical change
c)
Casual change
d)
Formal change
10.
What characteristic defines all chemical changes?
a)
There is a change of state.
b)
Electricity is produced.
c)
A new material is formed.
d)
Bubbles are produced.
11.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
12.
An instant ice pack getting cold when the chemicals are able to touch.
a)
Chemical Change
b)
Physical Change
13.
One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?
a)
evaporation; chemical change
b)
condensation; physical change
c)
evaporation; physical change
d)
condensation; chemical change
14.
How many protons does Helium have?
a)
4
b)
4.0026
c)
2
d)
1
15.
When two or more elements join together chemically,
a)
a mixture is formed
b)
nothing is formed
c)
a compound is formed
16.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
17.
How many neutrons does Xenon have?
a)
131.29
b)
77
c)
54
d)
10
18.
In an atom, electrons_.
a)
Are located in the nucleus
b)
Are paired with neutrons
c)
Travel outside the nucleus
d)
Are always in the same place in an atom
19.
Exothermic reactions...
a)
Absorb energy
b)
Release energy
c)
Release Color
d)
Absorb Color
20.
In an endothermic reaction, heat is
a)
taken in
b)
given out
21.
How are the elements in the periodic table arranged?
a)
by their atomic mass
b)
by their chemical symbol
c)
by their chemical name
d)
by their atomic number
22.
Each column in the periodic table is called a
a)
period
b)
group or family
c)
cluster
d)
unit
23.
An element's identity is determined by the number of
a)
electrons.
b)
protons.
c)
neutrons.
d)
valence.
24.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
25.
What will weigh more when a chemical change is complete? The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
26.
Evidence of a chemical change does NOT include:
a)
New substances
b)
Heat produced
c)
Phase change
d)
Light produced
27.
How is a physical change different from a chemical change?
a)
There is absolutely no difference
b)
Chemical changes produce a new substance, physical changes stay the same substance
c)
Chemical changes create and destroy matter, physical changes don't
d)
Physical changes create and destroy matter, chemical changes dont
28.
If four hydrogen atoms react with two hydrogen atoms, how many atoms will be in the product?
a)
6
b)
4
c)
8
d)
2
29.
This is made up of one or more of the SAME kind of atom.
a)
Element
b)
Mixture
c)
Compound
d)
Matter
30.
Water is an element.
a)
true
b)
false
31.
Copper is a mixture.
a)
True
b)
False
32.
The total amount of matter before and after a chemical reaction, remains the same.
a)
True
b)
False
33.
Identify the reactants in this chemical equation:
2Cu + O2 --> 2CuO
2Cu + O2 --> 2CuO
a)
2Cu + O2 --> 2CuO
b)
2Cu + O2
c)
Copper, Oxygen
d)
2CuO
34.
What does it mean if the product of a chemical equation has more atoms than the reactants?
a)
Matter was created (which is impossible)
b)
It follows the Law of Conservation of Matter/Mass
c)
Matter was destroyed (which is impossible)
d)
A new discovery has been made
35.
Identify the atomic number
a)
W
b)
74
c)
183.85
d)
Tungsten
36.
Is melting a physical or chemical change?
a)
physical
b)
chemical
c)
neither physical or chemical
d)
both physical and chemical
37.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas (bubbles)
d)
dissolving
38.
A copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
39.
Is moldy cheese a chemical or physical change?
a)
chemical
b)
physical
40.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
41.
What is digestion?
a)
physical change
b)
chemical change
42.
What happens when water freezes?
a)
ice is formed; chemical property
b)
cold water is formed; physical change
c)
ice is formed; physical change
d)
cold water is formed; chemical change
43.
Vertical columns in the periodic table are _________ of elements with similar properties.
a)
groups
b)
periods
44.
Identify the atomic mass
a)
79
b)
Au
c)
Gold
d)
196.967
45.
What does the arrow mean in a chemical equation?
a)
the number of molecules
b)
the number of atoms of a particular element
c)
"yields" or "produces"
d)
that a physical reaction has occured
46.
Which state of matter has tightly packed molecules?
a)
solid
b)
liquid
c)
gas
47.
Which state of matter has molecules that vibrate the most?
a)
solid
b)
liquid
c)
gas
48.
What charge does a Proton have?
a)
Negative
b)
Positive
c)
Neutral
d)
Concentrated
49.
How many Hydrogen (H) atoms are in NH3O5
a)
3
b)
4
c)
5
d)
1
50.
What is this?
a)
Compound
b)
Mixture of compounds and elements
c)
Mixture of compounds
d)
Mixture of elements
51.
What is this?
a)
Compound
b)
Element
c)
Mixture of compounds
52.
What is this?
a)
Mixture of compounds
b)
Mixture of elements
c)
Compound
53.
When heat is applied to a substance the particles move faster.
a)
true
b)
false
54.
The amount of matter an object contains is the definition of
a)
Volume
b)
Mass
c)
Matter
d)
Mixture
55.
What are the basic building blocks of matter called? (What makes up elements and molecules?)
a)
Compounds
b)
Mixtures
c)
Atoms
d)
Mass
56.
Which model of matter is most likely a liquid?
a)
A
b)
B
c)
C
57.
What is definition of volume?
a)
The amount of space an object takes up or occupies
b)
How much matter an object has.
c)
The basic building blocks of matter.
d)
How thick a liquid is.
58.
What is matter?
a)
Volume of an object
b)
Anything that has mass and takes up space
c)
Mass of an object
d)
Space of an object
59.
What is the definition of an element?
a)
The smallest part of any substance which can exist on its own
b)
Two or more atoms chemically joined together (can be the same or can be different)
c)
A pure substance in which all the atoms are identical
d)
Two or more different elements chemically joined together
60.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
61.
The central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
62.
What is the definition of a compound?
a)
The smallest part of any substance which can exist on its own
b)
Two or more atoms chemically joined together (can be the same or can be different)
c)
A simple substance in which all the atoms are identical
d)
Two or more different elements chemically joined together
63.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
64.
Italian Salad Dressing is a . . .
a)
heterogeneous mixture
b)
homogeneous mixture
c)
Pure Substance
d)
Compound
65.
What is sugar (C12H22O11)?
a)
element
b)
compound
c)
mixture
66.
What is gold (Au)?
a)
element
b)
compound
c)
mixture
67.
What is salad?
a)
element
b)
compound
c)
mixture
68.
The number in front of a compound or element is a
a)
Subscript
b)
Coefficient
c)
Superscript
d)
Charge
69.
The number to the lower side of an element is a
a)
Subscript
b)
Superscript
c)
Coefficient
d)
Charge
70.
Is this equation balanced or unbalanced?
2Fe2O3 + 3C --> 4Fe + 3 CO2
2Fe2O3 + 3C --> 4Fe + 3 CO2
a)
balanced
b)
unbalanced
71.
If a reaction starts with a total 75g of reactants it should produce
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
72.
In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B should have?
a)
4g
b)
5g
c)
9g
d)
14g
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