Chemical and Physical Changes Review

What does the atomic number tell us about an atom?

• The number of protons

• The number of neutrons

• The number of electrons

• The atomic mass

Tags

NGSS.MS-PS1-1

Which atoms are in the H₂SO₄ molecule?

• Hydrogen, Sulfur, and Oxygen

• Helium and Sodium

• Hydrogen, Silicon, and Oxygen

• Hydrogen and Water

Tags

NGSS.MS-PS1-1

What is the missing coefficient for C in the reaction: ___ C + ___ S4 → 4 CS2?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

In this equation, how many hydrogen atoms are involved?
HCl + NaOH → NaCl + H2O?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Label the parts of the atom

a

b

c

Proneutron

Electron

Neutron

Proton

Cell

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in this equation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Label the parts of the reaction.

a

b

Products

Reactants

Tags

NGSS.MS-PS1-2

Is the mold growing on cheese a physical or chemical change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Is milk souring a physical or chemical change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is burning wood a chemical or physical change?

• chemical

• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5