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Atoms, Elements And Molecules 2
Test Description: Practice test questions covering matter, atoms, mixtures, compounds, elements and the periodic table.
Instructions: Answer all questions to get your test result.
1) The smallest unit of matter in this list is ________.
A
a gas
B
an atom
C
a cell
D
a molecule
2) The electrons in an atom are located in the ___________.
A
element
B
nucleus
C
electron cloud
D
positive charge
3) What element has 9 protons?
A
C
B
N
C
O
D
F
4) Which of the following is the chemical symbol for lead?
A
Ld
B
L
C
Sn
D
Pb
5) __________ is the smallest atom.
A
Helium
B
Nitrogen
C
Hydrogen
D
Particle
6) What element has 19 protons?
A
C
B
A
C
K
D
N
7) A certain atom has 18 protons, 18 electrons, and an atomic mass of 39.95. How many neutrons does it have?
A
36
B
32
C
40
D
22
8) A certain atom has 4 protons, 4 electrons, and 5 neutrons. Its atomic mass is ____.
A
12
B
4
C
13
D
9
9) Matter is anything that has _________ and takes up ________.
A
weight, energy
B
mass, space
C
shape, atoms
D
color, odor
10) Which of the following is the chemical symbol for copper?
A
Au
B
C
C
Co
D
Cu
*select an answer for all questions
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