Introduction Chemical Reactions

Is water melting a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Is salt dissolving in water a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

Is a burning candle a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is getting a tan a physical or chemical change?

• Physical
• Chemical

rusty nail

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

The substances listed on the right side of a chemical equation are the

• Yields
• Reactants
• Products
• Precipitates

CaCO₃ represents a chemical

• Symbol
• Formula
• Subscript
• Reaction

The substances listed on the left side of a chemical equation are the

• Products
• Coefficients
• Precipitates
• Reactants

A molecule is smaller than an atom.

• True
• False

Tags

NGSS.MS-PS1-1

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

• 2
• 16
• 8
• 5

Tags

NGSS.MS-PS1-1