2.2

Is this person's body working normally?

• Yes

• No

An atom is made up of which 3 subatomic particles?

• protons, electrons, neutrons

• Positive, negative, neutrals

• Protons, nuggets, electricity

• Pretzles, nuggets, electrocution

Tags

NGSS.MS-PS1-1

What is the definition of an atom?

• A pure substance

• The smallest unit of matter. Smallest particle of an element; made up of protons, electrons, and neutrons

• A small number written to the right of the element's symbol.

• A type of machine

Tags

NGSS.MS-PS1-1

Identify the automic number of the element:

• 39.098

• K

• 19

Tags

NGSS.MS-PS1-1

Identify the automic number of the element:

• 35.45

• 17

• Cl

Tags

NGSS.MS-PS1-1

Identify the automic number of the element:

• Pt

• 78

• 195.085

Tags

NGSS.MS-PS1-1

Identify the symbol of the element:

• 39.098

• K

• 19

Tags

NGSS.MS-PS1-1

Identify the symbol of the element:

• 35.45

• 17

• Cl

Identify the symbol of the element:

• Pt

• 78

• 195.085

What is the definition of a molecule?

• A combination of 2 or more elements

• The smallest unit of matter.

• When two or more atoms are joined or bonded together.

Tags

NGSS.MS-PS1-1