atoms and elements

Use your periodic table to answer the following question.
Which of the following atoms has 14 electrons?

• Carbon (C)
• Silicon (Si)
• Sulfur (S)
• Argon (Ar)

Cobalt (Co) has 27 protons in each atom. Based on this information, which of the following also describes an atom of Cobalt?

• It has no neutrons.
• It has 27 electrons.
• It has 13 neutrons and 14 electrons.
• It has a total of 86 neutrons and electrons.

Tags

NGSS.MS-PS1-1

Which of the following identifies the number and location of protons in a Sulfur atom (S)?

• 32 protons, located in the nucleus
• 16 protons, located in the nucleus
• 32 protons, located outside the nucleus
• 16 protons, located outside the nucleus

An element with an atomic number of 37 and an atomic mass of 85 has how many neutrons in each atom?

• 37
• 48
• 85
• 122

Tags

NGSS.MS-PS1-1

How many protons and neutrons are there in an atom of Gallium (Ga)?

• 31 protons and 31 neutrons
• 31 protons and 70 neutrons
• 31 protons and 39 neutrons
• 31 protons and 101 neutrons

Tags

NGSS.HS-PS1-8

The protons in an atom’s nucleus have what kind of charge?

• positive
• negative
• neutral
• no charge

What kind of charge do neutrons have?

• positive 
• negative
• neutral
• -3

How do you find the number of neutrons in an atom?

• It is also the atomic number
• It is also the atomic mass
• Add the atomic mass and the atomic number
• Subtract the atomic number from the atomic mass

Neutrons + Protons = _________

• Atomic Number

• Atomic Mass

• Electrons

• Element

Tags

NGSS.MS-PS1-1

How many protons does this atom have?

• 4

• 5

• 9

• 13

Tags

NGSS.MS-PS1-1