Worksheets3/22 Chemistry Review
Total questions: 31
Worksheet time: 17mins
This symbol indicates a _______.
neutron
proton
electron
What 2 elements make up water?
Hydrogen and Carbon
Carbon and Oxygen
Hydrogen and Oxygen
Oxygen and Helium
What information does a subscript number tell us?
the number of atoms per element
the number of molecules per formula
What substance commonly exists in what 3 states of matter?
Oxygen
Carbon Dioxide
Rust
Water
An electron is located ...
in the nucleus.
outside the nucleus.
What information does the coefficient in an equation give us?
the number of atoms per element
the number of molecules per formula
The center of an atom is called
a/an __________.
atomic mass
nucleus
proton center
energy shell
Which formula has 6 atoms of Carbon, 12 atoms of Hydrogen, and 6 atoms of Oxygen.
The atomic number of an element is determined by the _________ of ________ in the nucleus.
protons, neutrons
number, electrons
electrons, protons
number, protons
If the protons and electrons do not match, the atom is ____.
neutral
ion
Hydrogen
H
Hy
Hg
h
Calcium
Ca
CA
Cl
CL
Neon
Nn
No
N
Ne
Look at this picture of Argon off the periodic table. Which of the following is true for this element?
18 protons
40 protons
22 protons
21.9 protons
Which of the following is correct?
Protons are positive, electrons are negative, neutrons are neutral.
Protons are neutral, electrons are negative, neutrons are positive
Protons are negative, electrons are positive, neutrons are neutral
Protons are positive, electrons are neutral, neutrons are negative
The atomic mass of an atom is equal to
number of protons plus number of neutrons
number of protons plus number of electrons
number of electrons plus the number of neutrons
Which subatomic particle has a negative charge?
proton
neutron
electron
cybertron
Which subatomic particle as no charge, also known as a neutral charge?
proton
neutron
electron
chakra
___________ are the smallest unit of an element that maintains the properties of that element.
Atoms
Elements
Compounds
Mixtures
Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.
heterogeneous
homogeneous
pure
