Yr 10 Chemistry Revision

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

Tags

NGSS.HS-PS1-8

What is the mass number?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

Tags

NGSS.HS-PS1-8

What is the atomic number of this nucleus?

• 1

• 3

• 4

• 7

Tags

NGSS.HS-PS1-8

What is the mass number of this nucleus?

• 1

• 3

• 4

• 7

Tags

NGSS.HS-PS1-8

What is the atomic number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the atomic number of this atom?

• 4

• 5

• 9

• none of the above

Tags

NGSS.HS-PS1-1

What is the mass number of this atom?

• 4

• 5

• 9

• none of the above

Tags

NGSS.HS-PS1-7

The atomic number of Hydrogen is

• 1

• 2

• 3

• 4

The atomic number of Lithium is

• 3
• 4
• 5
• 6

Because atoms are neutral, the number of protons is always _______ the number of electrons

• greater than

• less than

• equal to

• proportional to