Flash Cards unit 4

Front

What are the coefficients used to balance the equation Ag2O → Ag + O2?

A) 2,4,1

B) 1,1,1

C) 2,1,2

D) 2,2,2

Back

2,4,1

Front

Balance this equation.

CH₄ + O₂ --> CO₂ + H₂O

a. 1,2,1,1

b. 2,1,2,1

c. 1,2,1,2

d. 0,2,0,2

Back

1,2,1,2

Front

Is the equation balanced?

: 2H₂O + O₂ --> 4MgO + 3Fe

Back

No

Front

What is the change of state from a liquid to a gas called?

Back

Evaporization

Front

What state of matter does this picture represent?

Back

Liquid

Front

What is the change of state from a gas to a liquid called?

Back

Condensation

Front

Which is true about gases?

a. Gas particles have the lowest kinetic energy

b. Gas particles have a fixed volume

c. Gases take the shape of their container.

d. Gases have a high density.

Back

C. Gases take the shape of their container.

Front

Freezing and Melting happen at the same temperature

T or F

Back

True

Front

What is the change of state of a solid directly to a gas called?

Back

Sublimation

Front

What type of reaction is this?

a. Combination (or Synthesis)

b. Single replacement

c. Double replacement

d. Decomposition

Back

Single replacement