Atoms and Elements

Which of the following is found farthest from the center of an atom?

• nucleus
• proton
• neutron
• electron

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

What makes an atom have a positive charge?

• more electrons than protons
• more neutrons than electrons
• more protons than electrons
• less protons than electrons

An atom has 54 protons, 54 electrons, and 131 neutrons. What is the atomic number of the atom?

• 54
• 77
• 131
• 185

Tags

NGSS.MS-PS1-1

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

What is the basic unit of matter (smallest part of an element)?

• atoms
• elements
• protons
• compounds

Tags

NGSS.5-PS1-1

All atoms of an element have the same number of _____________.

• neutrons
• electrons
• protons
• atomic mass

Tags

NGSS.MS-PS1-1

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

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1