Chemistry Chapter 3

Most of an atom's mass is in the 

• nucleus
• proton
• electron cloud
• neutron

An atom is the smallest part of an element.  T/F

• True
• False

Neutrons have what kind of charge?

• positive
• negative
• neutral

Neutrons have what kind of charge?

• positive
• negative
• neutral

What is the symbol for mercury?

• Mg
• Hg
• Me
• K

What is the chemical symbol for sodium?

• K
• Na
• S
• Sd

An atom contains ____ in various energy levels.

• protons
• neutrons
• electrons

An Electron carries a ___ charge and has almost no mass.

• Positive
• Negative
• Neutral

Tags

NGSS.MS-PS2-3

Elements in the same ______ on the periodic table have similar chemical reactivity because they have the same number of valence shell electrons

• column
• row

Symbolized by dots in a lewis dot diagram.

• Protons
• Neutrons
• Electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2