Unit 5 - Test (R) - Chemical Reactions - On Level - IPC

Power plants cause most of the acid rain, this is because they are responsible for __________.

• spraying pesticides on crops

• burning fossil fuels for energy

• dumping sewage in river systems

How is acid rain formed?

• Carbon monoxide and carbon dioxide mix with water in the ocean.

• Carbon dioxide and oxygen mix with water in the air.

• Sulfur dioxide from power plants mixes with water in the air.

What human activity is the main cause of acid rain?

• driving cars

• deforestation

• operating power plants

This was formerly used as a refrigerant and as a propellant in aerosol cans. These chemicals damage the ozone layer of the Earth.

• Smog

• Pollution

• Chlorofluorocarbon

What effect to chlorofluorocarbons have on the atmosphere?

• They add fossil fuels to the environment

• They destroy important UV filtering ozone molecules

• They add phosphorous to the atmosphere

_____ reactions usually feel hot!

• endothermic

• exothermic

• synthetic

____ reactions usually feel cold.

• endothermic

• exothermic

• synthetic

Jamie makes an ice bath which contains 12 kg of water. Jamie then adds 6 ice cubes to the water bath. Each ice cube weighs one kg. After all of the ice cubes have melted, what will be the approximate weight of the bath water?

• 6 kg

• 12 kg

• 18 kg

In a reaction A + B ----> C, reactant A has 5g and product C has 9g. How many grams does reactant B have?

• 4g

• 5g

• 9g

In the reaction AB-----> A + B reactant AB has 12g and product B has 5g. How many grams should product A have?

• 17g

• 2g

• 7g