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WorksheetsChemistry Quiz
Total questions: 54
Worksheet time: 27mins
Name
Class
Date
1.
Copper reacts with oxygen to form copper oxide. How do the properties of copper oxide compare to the properties of copper and oxygen?
a)
Copper oxide is different from copper and oxygen.
b)
Copper oxide is similar to both copper and oxygen.
c)
Copper oxide is similar only to copper.
d)
Copper oxide is similar only to oxygen.
2.
Which action provides evidence that elements can combine to form new compounds?
a)
adding heat to melt a solid
b)
removing heat to freeze a liquid
c)
moving a piece of metal with a magnet
d)
pouring two liquids together to form a solid
3.
Which of the following is an element?
a)
water
b)
nitrogen
c)
carbon dioxide
d)
NaCl
4.
What does the law of conservation of mass mean during a chemical reaction?
a)
The total mass of the reactants is greater than the total mass of the products.
b)
The total mass of the reactants is the same as the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
The total mass of the reactants and products cannot be measured.
5.
Which of the following is an example of a chemical property?
a)
density
b)
shape
c)
color
d)
flammability
6.
Which of the following is a physical property of copper?
a)
ductile
b)
liquid at room temperature
c)
readily reacts with water to form an acid
d)
readily reacts with oxygen
7.
On the periodic table, what is a group of elements that are arranged in a vertical column called?
a)
gas
b)
family or group
c)
cluster
d)
period
8.
Which of these materials is a good conductor of heat and electricity?
a)
rubber
b)
glass
c)
metal
d)
newspaper
9.
Which element is a metalloid?
a)
sodium
b)
arsenic
c)
neon
d)
cobalt
10.
Which of the following is the product of a chemical change?
a)
ice
b)
rust
c)
sawdust
d)
salt water
11.
Earth's air is made up of molecules of different gases that are not joined chemically. Which best describes air?
a)
compound
b)
mixture
c)
pure substance
d)
element
12.
Which statement best describes the periodic table?
a)
Each vertical column forms a period.
b)
The number of electrons decreases from left to right.
c)
The atomic mass decreases from left to right.
d)
Elements in the same group have similar chemical properties.
13.
Which of these elements is most likely to have chemical properties similar to those of calcium (Ca)?
a)
magnesium
b)
neon
c)
potassium
d)
zirconium
14.
Which action causes a physical change but not a chemical change?
a)
lighting a candle
b)
baking a cake
c)
dissolving an antacid tablet in water
d)
separating sand from pebbles
15.
Which best describes matter that contains only one kind of atom?
a)
element
b)
compound
c)
mixture
d)
crystal
16.
Which indicates a physical change?
a)
change in state
b)
release of heat
c)
formation of a precipitate
d)
formation of a new substance
17.
When 20 grams of vinegar is poured into a beaker containing 5 grams of baking soda, the mixture begins to bubble. When the reaction is completed, the mass of the products in the beaker is 16.3 grams. Which best explains this?
a)
A gas was released during the physical reaction.
b)
A gas was released during the chemical reaction.
c)
A precipitate formed during the physical reaction.
d)
A precipitate formed during the chemical reaction.
18.
Which is the simplest substance?
a)
oil
b)
salt
c)
sulfur
d)
water
19.
Which best describes elements found along the bold staircase line on the right side of the periodic table?
a)
gases
b)
metalloids
c)
metals
d)
nonmetals
20.
Which best describes sodium chloride (NaCl)?
a)
a mixture which is physically produced
b)
a mixture which is chemically produced
c)
a compound which is physically produced
d)
a compound which is chemically produced
21.
When oxygen reacts with iron, it produces rust. In a closed system, how much oxygen must react with 120 grams of iron to produce 580 grams of rust?
a)
120 grams
b)
460 grams
c)
580 grams
d)
700 grams
22.
A student finds that an unknown element reacts with elements from Group 2. To which group does the unknown element most likely belong?
a)
Group 1
b)
Group 3
c)
Group 16
d)
Group 18
23.
After a scientist mixes two clear solutions, he is unable to detect a temperature change. However, he knows a chemical change occurred. Which evidence best proves a chemical change did indeed occur?
a)
There was an increase in the mass of the new solution produced.
b)
A solid precipitate was produced which settled out of the solution.
c)
There was a decrease in the volume of the new solution produced.
d)
Two distinct layers were observed when the two original solutions were combined.
24.
Which describes a chemical change taking place?
a)
Water boils when heat is added.
b)
Water vapor surrounds a melting ice cube.
c)
Color changes when food coloring is added to water.
d)
Gas bubbles form when a substance is put into water.
25.
Which are the most chemically reactive?
a)
Group 1
b)
Group 2
c)
Group 13
d)
Group 18
26.
Anything that has mass and takes up space is called
a)
matter
b)
energy
c)
hetrogeneous
d)
homogeneous
27.
What holds atoms together in a molecule
a)
densit
b)
gravity
c)
physical bonds
d)
chemical bonds
28.
H20, CO2, and C12H22O11, are all examples of chemical
a)
properties
b)
changes
c)
bonds
d)
formulas
29.
Soil, a salad, and sugar water are all examples of
a)
elements
b)
compounds
c)
mixtures
d)
atoms
30.
The volume of an irregular object can be measured by
a)
multiplying the object's length, width, height
b)
multiplying density by mass
c)
submerging the object in water in a graduated cylinder
d)
placing object on triple beam balance
31.
One example of a physical change is
a)
burning paper
b)
baking cookies
c)
toasting marshmallows
d)
dissolving salt in water
32.
One example of a chemical change is
a)
filtering a mixture
b)
burning wood
c)
boiling water
d)
crushing a can
33.
Fireworks exploding in the sky and giving off light are an example of an
a)
endothermic change
b)
chemical change
c)
physical change
d)
change is mass
34.
The measurement of how much mass is in a given volume is called
a)
weight
b)
melting point
c)
boiling point
d)
density
35.
All elements are made of basic particle called
a)
compounds
b)
mixtures
c)
atoms
d)
molecules
36.
The density of a block of wood with a volume of 50 cubic centimeters and a mass of 100 grams is
a)
2
b)
.5
c)
500
d)
5000
37.
In the lab, volumes of liquids are usually measured
a)
electrode
b)
scale
c)
triple-beam balance
d)
graduated cylinder
38.
How would you calculate the density of an object
a)
divide weight by volume
b)
divide its mass by volume
c)
multiply volume times it mass
d)
multiply weight times mass
39.
If you heat a liquid and measure the temperature at which it boils, you are measuring
a)
atomic property
b)
physical property
c)
chemical property
d)
molecular property
40.
If you describe methane as a gas that easily catches fire, you are describing a
a)
state of matter
b)
physical property
c)
chemical property
d)
chemical formula
41.
A change that produces one of more new substance is called a PHYSICAL change
a)
True
b)
False, Property
c)
False, Chemical
42.
A _______________is a group of 2 or more atoms held together by a chemical bond.
a)
atom
b)
densit
c)
molecule
d)
element
43.
In a ____________________ mixture, like a salad, you can see the different parts.
a)
Homogeneous
b)
Heterogeneous
c)
Snyder
d)
Cedar Hollow
44.
The atomic number of an element is based on the
a)
mass of its nucleus
b)
number of electrons around its core
c)
number of protons in the nucleus
d)
number of neutrons in its nucleus
45.
From an element's location in the periodic table, you can predict
a)
its properties
b)
its chemical name
c)
its chemical symbol
d)
when it was discovered
46.
In general which of the following statements about metals is true
a)
metals need to be stored for safety
b)
metals are malleable, ductile, and can carry and electrical current
c)
metals are highly reactive substances
d)
metals do not react with oxygen
47.
The elements that do not ordinarily form compounds are
a)
elements in the carbon
b)
metals
c)
halogens
d)
noble gases
48.
Which of these statements about a column of the periodic table is true
a)
The elements have similar characteristics
b)
The elements have a wide range of characterisitcs
c)
The elements have the same atomic number
d)
The elements have the same atomic mass
49.
In the periodic table, the most reactive METALS are found
a)
in Group 1
b)
in Period 1
c)
In groups 13-16
d)
in Periods 6&7
50.
Which group contains the most elements
a)
metalloids
b)
nonmetals
c)
metals
d)
transition metals
51.
A material is said to be ductile if it
a)
can be pulled or drawn into a long wire
b)
can be hammered or rolled into shapes
c)
can transfer heat
d)
is a mixture of metal with another element
52.
What parts of the atom move around the nuclues
a)
atomic mass units
b)
electrons
c)
protons
d)
neutrons
53.
Fluorine, chlorine, bromine, and iodine are part of a family called
a)
noble gases
b)
metalloids
c)
halogens
d)
alkali metals
54.
The modern periodic table is organized according to
a)
atomic mass
b)
reactivity
c)
atomic number
d)
atomic weight
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