Which is an electron?

• A

• B

• C

Tags

NGSS.MS-PS1-1

Which is a neutron?

• A

• B

• C

Tags

NGSS.MS-PS1-1

Which is a proton?

• A
• B
• C

Tags

NGSS.MS-PS1-1

What is the number of protons that the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

The particles that are found in the nucleus of an atom are

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

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.MS-PS1-1

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

The first energy level can hold up to how many electrons?

• 8
• 4
• 2
• 5

A horizontal row in the periodic table is called....

• Group
• Family
• Column
• Period

What element is this model showing?

• Lithium
• Boron
• Carbon
• Neon

Tags

NGSS.MS-PS1-1