Seventh Grade Chemistry Test
1. Matter is found in three different states. Which of
these describes a gas?
A. Takes the shape of its container with atoms that
are near to each other but are able to slide past one
another.
B. Has no definite shape, but fills its entire container.
Atoms are spaced far apart and move very
quickly.
C. Resists changes in shape with atoms are tightly
bound to each other.
D. None of these descriptions describe a substance in
the liquid state.
2. According to the Atomic Theory, what is all matter
made of?
3. Which of these describes a proton?
A. A proton is positive and is found outside of the
nucleus.
B. A proton is negative and is found outside the
nucleus.
C. A proton is positive and is found in the nucleus.
D. A proton is negative and is found in the nucleus.
4. Which of these determines the identity of an atom?
A. The number of electrons in the electron cloud.
B. The number of protons in the nucleus.
C. The number of neutrons in the nucleus.
D. It is not known why there are different types of
atoms.
5. Which of these gives the atomic symbol and the
number of protons found in atoms of the element
below?
A. Nitrogen, 14
B. Nitrogen, 7
C. N, 14
D. N, 7
6. An unknown substance is found. A scientist
determines that its atoms all have 19 protons. What is
the full name for this unknown substance?
7. Which of these correctly describes the element shown
below?
A. It contains 131 protons in the
nucleus.
B. It contains 77 neutrons in the
nucleus.
C. It contains 54 electrons in the nucleus.
D. It is a solid at room temperature.
(Sc.7.2a)
8. Which of these accurately describes an element?
A. An element is substance that is made up of at least
two different types of atom. There are 118
elements.
B. An element is substance that is made up of only
one type of atom. There are 118 elements.
C. An element is substance that is made up of at least
two different types of atom. There are millions of
elements.
D. An element is substance that is made up of only
one type of atom. There are millions of elements.
9. Using your periodic table, determine which of these is
a gaseous nonmetal?
A. Palladium (Pd) – Atomic # 46
B. Iodine (I) – Atomic #53
C. Zirconium (Zr) – Atomic #40
D. Radon (Rn) – Atomic #86
10. Which of these compares the physical appearance of
metals and nonmetals?
A. Both metals and nonmetals are dull and brittle.
B. Both metals and nonmetals are shiny and
malleable.
C. Metals are dull and brittle while nonmetals are
shiny and malleable.
D. Metals are shiny and malleable while nonmetals
are dull and brittle.
11. Which of these compares the ductility of metals and
nonmetals?
A. Metals are ductile and can be stretched into wires
while nonmetals are nonductile and cannot be
stretched into wires.
B. Metals are ductile and cannot be stretched into
wires while nonmetals are nonductile and can be
stretched into wires.
C. Both metals and nonmetals are ductile and cannot
be stretched into wires.
D. Both metals and nonmetals are ductile and can be
stretched into wires.
12. Which of these is NOT a gas?
A. Sulfur (S)
B. Nitrogen (N)
C. Krypton (Kr)
D. Neon (Ne)
13. A scientist is trying to determine if a substance is a
metal or nonmetal. The scientist places the substance
into a circuit containing a battery and a light bulb.
The scientist observes that the light bulb is lit. Which
of these is an appropriate inference based on her
observation?
A. The substance is a metal because it produces
energy that lights the bulb.
B. The substance is a nonmetal because it releases its
electrons easily.
C. The substance is a metal because it conducts
electricity well.
D. The substance is a nonmetal because it conducts
electricity well.