Atomic number, mass number, isotopes, and isobars

Assessment

Atomic number, mass number, isotopes, and isobars

ninja coder

Chemistry

Grade9

10 Plays

100 Participants

Worksheet

10 Qs

1.
Multiple Choice
1 pts•30 s
Define the atomic number of an element.
Answer choices
Total number of neutrons in the nucleus
Number of protons in the nucleus
Sum of protons and neutrons
Number of electrons in the outer shell
2.
Multiple Choice
1 pts•30 s
Explain what is meant by the mass number of an atom.
Answer choices
Number of electrons in the atom
Sum of protons and neutrons in the nucleus
Number of protons only
Mass of one electron
3.
Multiple Choice
1 pts•30 s
Describe what isotopes are.
Answer choices
Atoms with different atomic numbers
Atoms of the same element with different mass numbers
Atoms with the same mass number but different elements
Atoms with no neutrons
4.
Multiple Choice
1 pts•30 s
Name an example of isotopes of hydrogen.
Answer choices
Carbon-12 and Carbon-14
Protium and Deuterium
Chlorine-35 and Chlorine-37
Argon-40 and Potassium-40
5.
Multiple Choice
1 pts•30 s
Clarify what isobars are.
Answer choices
Atoms of the same element with different neutrons
Atoms of different elements with the same mass number
Atoms with the same atomic number
Atoms with no protons
6.
Multiple Choice
1 pts•30 s
Point out an example of isobars.
Answer choices
Carbon-12 and Carbon-14
Argon-40 and Calcium-40
Hydrogen-1 and Hydrogen-2
Uranium-235 and Uranium-238
7.
Multiple Choice
1 pts•30 s
Indicate how isotopes of an element differ from each other.
Answer choices
Different number of protons
Different number of neutrons
Different number of electrons
Different atomic numbers
8.
Multiple Choice
1 pts•30 s
State the atomic number and mass number of Carbon-14.
Answer choices
Atomic number = 6, Mass number = 12
Atomic number = 6, Mass number = 14
Atomic number = 8, Mass number = 14
Atomic number = 14, Mass number = 6
9.
Multiple Choice
1 pts•30 s
Describe why isotopes of an element have similar chemical properties.
Answer choices
They have different numbers of neutrons
They have the same number of protons and electrons
They have different mass numbers
They have different atomic numbers
10.
Multiple Choice
1 pts•30 s
Explain how isobars differ from isotopes.
Answer choices
Isobars are of the same element, isotopes are of different elements
Isobars have same mass number, isotopes have same atomic number
Isobars have same atomic number, isotopes have same mass number
Isobars and isotopes are identical