Chemistry

What is the atomic number?

• The number of protons in an element
• The number of neutrons in an element
• The number of protons and neutrons.
• The number of electrons.

What is the atomic number of an element with 12 protons, 13 neutrons and 12 electrons?

• 12
• 13
• 25
• 24

Changing the number of electrons in an atom changes its...

• element type.
• charge.
• isotope type.
• atom type.

Electrons have virtually no mass (weight).

• True
• False

How many protons are in an atom of carbon?

• 12
• 8
• 6
• 14

How many electrons does a neutraly charged carbon atom have?

• 0
• 2
• 14
• 6

Tags

NGSS.MS-PS1-1

What parts of the atom make up most of its mass?

• protons and electrons
• protons and neutrons
• neutrons and electrons
• electrons

Where are electrons located in an atom?

• inside the nucleus
• electron cloud
• outside space-time
• Oort cloud

Which subatomic particle is found outside of the nucleus?

• Electron
• Proton
• Neutron
• Quark

Water is an element

• true
• false