
Understanding Atomic and Mass Numbers

Interactive Video
•
Chemistry, Science
•
6th - 9th Grade
•
Hard

Sophia Harris
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What information can you find in each element's box on the periodic table?
The atomic number and mass number
The element's color
Only the element's name
The number of electrons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the atomic number (symbol 'z') represent?
The number of protons in an atom
The number of electrons in an atom
The number of neutrons in an atom
The total mass of the atom
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which element has an atomic number of 1?
Carbon
Lithium
Hydrogen
Oxygen
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the mass number (symbol 'A') indicate?
The number of protons and neutrons in an atom
The total volume of the atom
The number of electrons in an atom
The number of protons in an atom
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are electrons not considered in the mass number of an atom?
They are located outside the nucleus
They are not part of the atom
They are too small to significantly contribute to the mass
They have a negative charge
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you calculate the number of neutrons in an atom?
Subtract the atomic number from the mass number
Add the atomic number to the mass number
Multiply the atomic number by the mass number
Divide the mass number by the atomic number
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If an oxygen atom has a mass number of 16 and an atomic number of 8, how many neutrons does it have?
0
24
16
8
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For a lithium atom with a mass number of 7 and an atomic number of 3, how many neutrons are present?
4
3
10
7
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