WorksheetsIntro to atoms
Total questions: 25
Worksheet time: 9mins
What is the outer ring of this atom?
Nucleus
Protons
Electron cloud
Neutrons
What could the yellow particles be?
Molecules
Electrons
Gases
Protons
What is this a model of?
A carbon atom
An oxygen atom
A sodium ion
A carbon-14 isotope
What is the mass of one of the green particles?
1 AMU
Slightly more than 1 AMU
1/1800 AMU
12 AMU
What is the atomic mass of this atom?
6 AMU
3 AMU
12 AMU
18 AMU
What is this element?
Hydrogen
Helium
Hafnium
Mercury
How many protons does this element have?
1
6
4
2
How many neutrons does this element have?
3
6
4
2
If this atom has no charge, what element is it?
Carbon
Nitrogen
Boron
Rubidium
What element is this?
Helium
Lithium
Hydrogen
Boron
What are these?
Two isotopes of the same element
Two different elements
Two ions
An element and a compound
What is this?
An isotope
A negative ion
A positive ion
A compound
What element is this?
Hydrogen
Helium
Lithium
Carbon
What is this element's atomic number?
3
6
8
9
What is this atom's mass?
3 AMU
6 AMU
8 AMU
9 AMU
What is this?
A Chlorine atom
One of the isotopes of Calcium
A Potassium ion
A sodium atom
How would this atom become a positive ion?
If it lost one neutron
If it lost one electron
If it gained one proton
If it gained one electron
Which of the following is a helium atom?
What is this?
An argon isotope
A chlorine atom
A phosphorus atom
A bromine ion
What is this?
A flourine ion
A calcium atom
A sodium isotope
A potassium ion
What is the average atomic mass of Chlorine?
17 AMU
35.45 AMU
Cl
3 AMU
What element is this?
Aluminum
Astatine
Silver
Gold
How many protons does Einsteinium have?
99
252
153
351
What is the average mass of Uranium?
92
238.03
146.03
330.03
How many neutrons does Carbon-14 have?
14
6
8
20
