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WorksheetsWarm-up: Matter & Atoms
Total questions: 20
Worksheet time: 13mins
Has a negative charge
Electron
Proton
Neutron
atom
The atoms of one element differ from those of another
element in the number of
Electrons
atoms
protons
elements
An element is a form of matter made up of _____.
one type of atom
many types of atoms
The most common element in the universe is __________.
hydrogen
oxygen
nitrogen
helium
Two elements that occur in the earth's atmosphere are _____ and _______.
Silicon and Argon
Argon and Aluminum
Nitrogen and Oxygen
Helium and Nitrogen
The Earth's crust is primarily made up of which two elements?
nitrogen and hydrogen
oxygen and carbon
silicon and oxygen
How many elements are in this chemical formula?
HCl
1
2
3
4
How many atoms of Carbon are in this formula? C6 H12O6
6
1
12
How many atoms of aluminum are in this formula?
2Al2 O3
2
6
1
4
What is the mass number and atomic number ?
Mass number = 7, atomic number = 14
Mass number = 14, atomic number = 7
How many electrons are in an atom of strontium?
125.62
87.62
49.62
38
How many neutrons are in an atom of oxygen?
15
8
7.999
15.999
When a new substance is formed with different properties than the original substance it is called a...
Chemical change
Physical change
Change in State
Change in appearance only.
gas and/or light is produced
there is a color change.
there is a temperature change.
All of these answers are evidence.
