WorksheetsAtoms and Periodic Table (Lesson 4)
Total questions: 22
Worksheet time: 10mins
Atoms are not __ or destroyed during a chemical reaction.
reactants
created
destroyed
products
The atoms or molecules on the left side of a chemical equation are called __.
reactants
created
destroyed
products
The atoms or molecules on the right side of a chemical equation are called __.
reactants
created
destroyed
products
Atoms are not created or __ during a chemical reaction.
reactants
created
destroyed
products
The small numbers used to make chemical formulas are called __.
subscript
formula
coefficient
The arrow used in a chemical equation is called a __ sign.
add
same
yields
If a chemical equation is balanced it will have the __ number of atoms on both sides.
add
same
yields
What kind of charge do electrons have?
Positive charge
No charge
Negative charge
Electric charge
How do you find the number of neutrons?
Mass number - Atomic number
Protons + Neutrons
Protons + Electrons
Mass number + Atomic number
If an atom has an atomic mass of 27 and an atomic number of 13, how many neutrons does it have?
13
15
14
12
Where are Electrons located?
In the nucleus
In the electron cloud
Next to the protons
What has no charge?
Proton
Nonmetal
Neutron
Electron
What is located in the nucleus of an atom?
protons and neutrons
protons and electrons
electrons and neutrons
Negative is the charge for _____.
protons
neutrons
electrons
