Unit 1 Matter and Energy Test Review

The temperature of 20 grams of water was increased by 5°C. How much heat energy was absorbed by the water?

• 4 J

• 100 J

• 83.6 J

• 418

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the total amount of heat energy needed to boil 5 grams of water at 100°C?

• 11300 J

• 500 J

• 2090 J

• 1670 J

Which Kelvin temperature is equal to 20°C?

• 20 K

• 293 K

• 253 K

• 100 K

Which quantity is equal to 500 mg?

• 50.0 g

• 5.00 g

• 0.500 g

• 500,000 g

A beaker with water and the surrounding air are all at 30°C. After ice cubes are placed in the water heat is transferred from

• the beaker to the air

• the water to the beaker

• the ice cubes to the air

• the water to the ice cubes

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following elements is a gas at STP?

• Magnesium (Mg)

• Sulfur (S)

• Chlorine (Cl)

• Sodium (Na)

Which could be the chemical formula of a compound?

• AB (l)

• A_{2 (g)}

• A (s) & B (s)

• AB(aq)

Which of the following can not be decomposed?

• salt water

• magnesium

• water

• carbon dioxide

Which particle diagram (s) represent chemical combinations of elements that have a fixed composition.

• A, B and C

• B only

• A only

• A and C

What type of matter can be heterogeneous?

• compounds and mixtures

• mixtures only

• all matter can be heterogeneous

• pure substances