Periodic Table Review

In chemical symbols, the first letter is always a ______ letter, and the second (or third) letter is always a _______ letter.

• capital, lower case

• lower case, lower case

• capital, capital

Atoms have a _________ charged nucleus.

• positively

• negatively

• neutral

Atoms are surrounded by _____________ charged electrons.

• positively

• negatively

• neutral

Tags

NGSS.MS-PS1-1

Protons are _________.

• positively charged particles that are found in the nucleus.

• negatively charged particles found in the electron cloud outside of the nucleus.

• particles with no charge that are found in the nucleus.

Electrons are _______.

• positively charged particles found within the nucleus.

• negatively charged particles found within the electron cloud outside of the nucleus.

• particles with no charge found within the nucleus.

Tags

NGSS.MS-PS2-3

Which two subatomic particles are found in the nucleus?

• Protons

• Electrons

• Neutrons

Elements in the same group have similar physical and chemical properties.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Valence electrons are _______.

• located the outermost energy level.

• located in the inner most energy level.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements in the same group have the same number of valence electrons.

• True

• False

Which represents the Bohr model of nitrogen?

• 
• 

Tags

NGSS.MS-PS1-1