Unit 2: The atom and the periodic table of elements

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

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

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

• 8
• 4
• 2
• 5

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

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

Which subatomic particle has a negative charge?

• Proton
• Neutron
• Electron
• Quark

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

• Group
• Family
• Column
• Period

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

What element is this model showing?

• Lithium
• Boron
• Carbon
• Neon

Tags

NGSS.MS-PS1-1

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

Tags

NGSS.MS-PS1-1

The number at the top of each square on the periodic table is the ...

• atomic number
• atomic mass
• Chemical Symbol
• Element Name

Tags

NGSS.MS-PS1-1

The subatomic particle with a neutral charge is:

• protons
• electrons
• neutrons
• cloud