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Quiz 2
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Q.1
How many energy levels does chlorine have?
none
1
2
3
Q.2
How many protons does magnesium have?
7
12
21
none of the above
Q.3
What is the atomic number of silicon?
7
14
21
none of the above
Q.4
What is the chemical symbol for oxygen?
Ox
O X
O
Oxy
Q.5
What is the chemical symbol for oxygen?
Ox
O X
O
Oxy
Q.6
In what part of the atom is the electron found?
energy level
nucleus
neutrons aren't part of atoms
Q.7
In what part of the atom is the electron found?
energy level
nucleus
neutrons aren't part of atoms
Q.8
What is the electrical charge on a electron?
positive
negative
neutral
Q.9
What is the electrical charge on a proton?
positive
negative
neutral
Q.10
What is the electrical charge on a proton?
positive
negative
neutral
Q.11
A pure substance that is made up of two or more types of atoms that are joined together is called a(n) _____________________.
compound
element
mixture
ion
Q.12
A pure substance that is made up of two or more types of atoms that are joined together is called a(n) _____________________.
compound
element
mixture
ion
Q.13
Water is a _______________ because it can be broken down into the _____________ oxygen and hydrogen.
molecule, compounds
element, molecules
atom, elements
compound, elements
Q.14
Water is a _______________ because it can be broken down into the _____________ oxygen and hydrogen.
molecule, compounds
element, molecules
atom, elements
compound, elements
Q.15
Substances that contain particles that are the same throughout are
pure substances
heterogeneous mixtures
heterogeneous compounds
Q.16
Substances that contain particles that are the same throughout are
pure substances
heterogeneous mixtures
heterogeneous compounds
Q.17
A _____________ can be solid, brittle, non-conductive, and dull.
metal
non-metal
Q.18
A _____________ can be solid, brittle, non-conductive, and dull.
metal
non-metal
Q.19
A star that could float on water,
it is more dense than water.
it is less dense than water.
its density is equal to that of water.
Q.20
Bags made out of cellulose eventually dissolve in water. This means that they are
soluble
malleable
ductile
conductivity
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