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Atoms Review
Test Description: Practice for the quiz
Instructions: Answer all questions to get your test result.
1) A subatomic particle found in the nucleus with a neutral charge (no charge)
A
neutron
B
proton
C
nucleus
D
electron
2) A subatomic particle found in the nuclues with a positive charge.
A
proton
B
neutron
C
atom
D
electron
3) Small particles within the atom
A
atomic submaterial
B
Compound
C
Subatomic particles
D
mixture
4) The smallest unit of an element that retains the properites of that element
A
periodic table
B
Compound
C
atom mass number
D
atom
5) Subatomic particle with a negative charge; found orbiting the nucleus in the energy shells/cloud
A
atom
B
electron
C
element
D
mixture
6) The number of protons is equal to the ....
A
atomic mass number
B
atomic weight
C
none of these
D
atomic number
7) Elements have _________ charge
A
negative
B
elemental
C
no (neutral)
D
positive
8) The mass number is equal to ....
A
protons+ neutrons
B
electrons + compounds
C
protons + mixture
D
protons + electrons
9) A substance in which two or more elements are chemically combined
A
mixture
B
atom
C
molecule
D
compound
10) Two or more substances are mixed together but NOT checmically combined.
A
compound
B
mixture
C
molecule
D
atom
11) Which of the following is an example of an element?
A
CO2
B
Si
C
H2O2
D
(O2 + CO2)
12) Which of the following is a compound?
A
CO2
B
(N2 + O2)
C
(O2 + CO2)
D
Si
13) Which of the following is a mixture?
A
CO2
B
Si
C
H2O2
D
(O2 + CO2)
14) Which of the following is the best discription of a solid?
A
has a definite shape, does not have a definite volume, the molecules are moving fast and are far apart.
B
has a definite shape, it has a definite volume, the molecules are moving slowly and are close together.
C
has a definite shape, does not have a definite volume, the molecules are moving slowly and are far apart.
D
it does not have a definite shape or volume, it takes the shape of the container it's in and the molecules move very quickly
15) Which best describes a liquid?
A
none of these
B
It has a definite shape, but not a definite volument the molecules are moving fast and are relatively far apart.
C
does not have a definite shape or volume the molecules are moving very fast and are very far apart.
D
It does not have a definite shape (it takes the shape of its container) the molecules are moving at a medium speed.
16) Which of the following describes a gas?
A
a definite shape , a definite volume, the molecules are moving slowly and are close together.
B
invisible, we know nothing else about it.
C
no definite shape or volume, the particles move fasest and are spread the furthest apart.
D
It does not have a definite shape (it takes the shape of its container) the molecules are moving at a medium speed.
17) How do we calculate density?
A
Density is equal to mass times acceleration
B
none of these
C
Density is equal to the volume divided by the mass
D
Density is equal to the mass divided by the volume
*select an answer for all questions
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