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