Unit 6 Quiz 2 - Atomic Theories to Rutherford & Atomic Mass

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number defined as?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

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NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

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NGSS.MS-PS1-1

What is the atomic number of Barium (Ba)?

• 20

• 38

• 56

• 88

How many protons are in a sodium atom (Na)?

• Sodium has 16 protons.

• Sodium has 12 protons.

• Sodium has 11 protons

• Sodium has 22 protons

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

• 6

• 10

• 4

• 8

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NGSS.MS-PS1-1

Atoms of the same element which have a different number of neutrons are called _________________.

• ions

• isotopes

• quarks

• molecules

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Which subatomic particle determines the identity of the element?

• proton

• neutron

• electron

• quark

How many neutrons does an atom of the isotope Neon-22 have? (tap to enlarge the image)

• 12

• 10

• 22

• 20

Tags

NGSS.MS-PS1-1