WorksheetsMatter EOG Review
Total questions: 64
Worksheet time: 32mins
Name
Class
Date
1.
Which of these determines the identity of an element?
a)
number of electrons
b)
number of protons
c)
number of energy levels
d)
number of neutrons
2.
What is formed when two or more elements are chemically combined?
a)
atom
b)
composite
c)
compound
d)
mixture
3.
Elements are described as pure substances because
a)
they are found in nature.
b)
they cannot be separated into parts by physical means.
c)
they have no charge.
d)
they can be produced in a laboratory.
4.
The nucleus of an atom contains
a)
only neutrons
b)
protons and electrons
c)
protons and neutrons
d)
only electrons
5.
Carbon and oxygen combine chemically to form carbon dioxide. Carbon dioxide is
a)
an ion
b)
a nucleus
c)
a compound
d)
an atom
6.
Which of these is not made up of two or more substances that are combined physically?
a)
homogeneous mixture
b)
compound
c)
heterogeneous mixture
d)
solution
7.
Filtration can be used to separate a mixture of
a)
a solid and a liquid
b)
a liquid and a gas
c)
two liquids
d)
two solids
8.
Which of these processes would be useful for separating a dissolved solid from a liquid?
a)
evaporation
b)
filtration
c)
sifting
d)
mixing
9.
Sodium is an element found in table salt. It contains 11 protons and 12 neutrons. How many electrons are found in a neutral atom of sodium?
a)
23
b)
12
c)
11
d)
1
10.
How are the elements in the modern periodic table arranged?
a)
alphabetical order
b)
by atomic mass
c)
by date discovery
d)
by number of protons
11.
Which elements in the periodic table are least likely to combine with other elements?
a)
halogens
b)
noble gases
c)
alkaline earths
d)
transition metals
12.
What happens during a physical change?
a)
New substances form.
b)
The identity of a substance is changed.
c)
A chemical reaction occurs.
d)
A property of a substance changes, but its identity stays the same.
13.
Which of the following is a chemical change?
a)
water freezing
b)
paper being torn
c)
cake baking
d)
ice melting
14.
A physical change is taking place when
a)
a nail rusts.
b)
onions are chopped.
c)
a piece of apple rots.
d)
a piece of paper burns.
15.
Which of the following would cause a chemical change in a piece of wood?
a)
hammering a nail into the wood
b)
burning the wood
c)
painting the wood
d)
sawing the piece of wood in half
16.
Which is a clue that a chemical change has occurred?
a)
A beaker becomes warm when you mix two room temperature liquids in it.
b)
A liquid forms bubbles when it reaches a high temperature.
c)
Water changes color when food coloring is added.
d)
A car door feels hot when touched in summer.
17.
When substances combine to form a mixture, they
a)
keep their original properties.
b)
form new chemical bonds.
c)
form a new compound.
d)
cannot be separated physically.
18.
Elements in the same column of the periodic table have
a)
similar chemical properties
b)
the same number of protons
c)
similar atomic masses
d)
atoms of the same size
19.
Which of these is a physical change?
a)
forming a precipitate
b)
rusting
c)
burning
d)
melting
20.
Which is always true of a balanced chemical equation?
a)
Coefficients on both sides of the equation are multiples of 2.
b)
The subscripts on one side of the equation = The subscripts on the other side.
c)
The number of atoms are the same on both sides.
d)
Both sides of an equation contain the same elements and the same number of atoms.
21.
Which of the following statements about elements is false?
a)
An element is a pure substance.
b)
An element is made up of compounds.
c)
An element is represented by a chemical symbol.
d)
Each element has its own atomic number.
22.
Which of these is not evidence that a chemical change may have taken place?
a)
release of heat
b)
formation of precipitate
c)
change in shape
d)
change in color
23.
Which term describes the substance that forms when two or more types of atoms join?
a)
element
b)
composite
c)
compound
d)
mixture
24.
Which shows an example of physical and then chemical change?
a)
dissolving sugar and grinding pepper
b)
melting butter and mixing flour with salt
c)
roasting meat and freezing leftovers
d)
boiling water and burning gasoline
25.
If a chemical reaction such as the formation of Iron oxide contains 4 atoms of iron (Fe) in the product, how many atoms of iron (Fe) would be in the reactants?
a)
12 atoms of iron (Fe)
b)
8 atoms of iron (Fe)
c)
4 atoms of iron (Fe)
d)
2 atoms of iron (Fe)
26.
Which is an example of a physical change?
a)
metal tarnishing
b)
nail rusting
c)
formation of precipitate
d)
dissolving sugar in water
27.
Which is the best example of a mixture?
a)
a brick of pure gold
b)
the distilled water in a bottle
c)
the salt water in the ocean
d)
the helium in a balloon
28.
Which best describes a chemical change?
a)
A chemical change required no change in energy.
b)
A chemical change is easily reversed.
c)
In a chemical change, there is only a change in state.
d)
In a chemical change, a new substance is formed.
29.
The atomic number of oxygen (O) is 8. How many protons does one oxygen atom contain?
a)
16 protons
b)
12 protons
c)
8 protons
d)
4 protons
30.
Which of these elements has chemical properties most similar to that of Carbon (C)
a)
Boron
b)
Magnesium
c)
Oxygen
d)
Silicon
31.
Magnesium (Mg) is immediately to the right of Sodium (Na) on the periodic table. In what way is Magnesium atom different from a Sodium atom?
a)
The number of protons is increased by one.
b)
The number of neutrons is increased by two.
c)
The atomic mass is increased by one.
d)
The number of electrons is increased by two.
32.
Which is the best example of a pure substance?
a)
peanuts
b)
milk
c)
gold
d)
air
33.
Which statement best explains how periods in the Periodic Table are organized?
a)
increasing atomic number from left to right
b)
increasing number of neutrons from left to right
c)
decreasing number of electrons from left to right
d)
decreasing atomic mass number from left to right
34.
An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?
a)
The molecules will begin to move slower.
b)
The molecules will begin to move faster.
c)
The molecules will begin to increase in density.
d)
The molecules will begin to condense in the air.
35.
Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?
a)
A physical change occurred.
b)
Atoms involved in the reaction lost mass.
c)
Precipitates were created in the new solution.
d)
Gases were released to the atmosphere.
36.
What happens to water molecules during the boiling process?
a)
They move faster and move farther apart as they absorb heat.
b)
They move faster and remain close together as they absorb heat.
c)
They move more slowly but move farther apart as they lose heat.
d)
They move faster and move farther apart as they lose heat.
37.
Which pair of elements has the most similar properties?
a)
Li and B
b)
I and Ca
c)
K and He
d)
N and P
38.
Which shows one example of a physical change and one example of a chemical change?
a)
boiling water and melting wax
b)
rusting iron and baking a cake
c)
dissolving powder and shredding paper
d)
freezing water and burning coal
39.
How does a balanced chemical equation satisfy the Law of Conservation of Mass?
a)
During a chemical reaction, the total amount of matter stays the same.
b)
During a chemical reaction, matter is destroyed.
c)
During a chemical reaction, one or more new substances are formed.
d)
During a chemical reaction, the total number of atoms increases.
40.
Which pure substance is composed of more than one element?
a)
carbon
b)
gold
c)
water
d)
sodium
41.
After a chemical reaction occurs in an open test tube, measurements indicate that the mass of the reactants is greater than the mass of the products remaining in the test tube. What most likely explains the measurements?
a)
A gas was produced.
b)
A solid was produced.
c)
The salinity of the reactants was high.
d)
The temperature of the reactants was low.
42.
Which element is a poor conductor of heat?
a)
F
b)
K
c)
Fe
d)
Ag
43.
How can a scientist, using the periodic table, find an element with properties similar to another element?
a)
by comparing density
b)
by finding its periodic group
c)
by comparing malleability
d)
by comparing atomic weight
44.
Which is an example of a physical change?
a)
boiling
b)
burning
c)
rotting
d)
rusting
45.
What property allows metals to form pots and jewelry?
a)
conductivity
b)
density
c)
ductility
d)
malleability
46.
Which is evidence that elements combine to form new compounds?
a)
melting a solid
b)
freezing a liquid
c)
moving a piece of metal with a magnet
d)
pouring two liquids together to create a solid
47.
Which property of metals allows them to be made into coins that have the same thickness?
a)
electrical conductivity
b)
density
c)
malleability
d)
specific heat
48.
Which best describes the physical change of an aluminum soda can, after it is crushed?
a)
There is a change in the mass of the can.
b)
There is a change in the weight of the can.
c)
There is a change in the volume of the can.
d)
There is a change in the color of the can.
49.
A chemical reaction produces two new substances, and each product has a mass of 25 grams. What was the total mass of the reactants?
a)
25 grams
b)
50 grams
c)
75 grams
d)
100 grams
50.
The elements are arranged in the group based on
a)
the number of neutrons
b)
the number of protons
c)
similar properties
d)
similar volume
51.
Which group has filled outer electrons?
a)
Group 14
b)
Group 13
c)
Group 17
d)
Group 18
52.
Which of the following are good insulators?
a)
metals
b)
non-metals
c)
metalloids
d)
solutions
53.
Which of the following is a metal?
a)
Boron
b)
Helium
c)
Gold
d)
Nitrogen
54.
Which of the following is a compound?
a)
Ammonia
b)
Gold
c)
Copper
d)
Zinc
55.
Sally looks at a burning candle on a table. She confirms that it is a chemical change. Which of the following statements confirms this?
a)
The candle grew smaller in size as it burned.
b)
The candle gave off light and smoke as it burned.
c)
The candle wax changed from a solid to a liquid state.
d)
The candle wax flowed from all sides of the burning candle.
56.
Which of the following is not a compound?
a)
ammonia
b)
carbon dioxide
c)
mercury
d)
hydrogen peroxide
57.
Synthetic elements mean_________
a)
the elements are made naturally.
b)
the elements are created by a chemist.
c)
the elements are from a mine.
d)
the elements are colored.
58.
How do you know if an element is Oxygen?
a)
It is a liquid.
b)
it is a metalloid.
c)
It contains 15 neutrons.
d)
It contains 8 protons.
59.
Karen has to classify table sugar (C12H22O11) as an atom, an element, a compound or a mixture. How can Karen classify C12H22O11?
a)
C12H22O11 is a compound because it is made up of atoms of two or more different elements bound together
b)
C12H22O11 is an element because an element is a pure substance that cannot be broken down or changed into another substance
c)
C12H22O11 is a mixture because it is made up of different elements which are held together by physical forces
d)
C12H22O11 is an atom because an atom is a pure substance that can only be broken down into another substance by chemical means
60.
Which of the following is an example of a physical change?
a)
burning
b)
rusting
c)
melting
d)
tarnishing
61.
When a substance changes from a solid to liquid, ______takes place.
a)
evaporation
b)
freezing
c)
boiling
d)
melting
62.
The atomic number represents ____________.
a)
the number of protons in an atom.
b)
the number of electrons in an atom.
c)
the number of neutrons in an atom.
d)
the number of nuclei in an atom.
63.
Which of the following is a chemical change?
a)
blending salad
b)
crushing paper
c)
burning wood
d)
melting butter
64.
Characteristic of a substance that can be measured or observed without changing the identity of the material is
a)
chemical change
b)
physical change
c)
chemical property
d)
physical property
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