(Q2) Benchmark Review

Front

What is an endothermic reaction?

Back

A reaction in which more energy is absorbed by the reactants than released by the products.

Front

What happens to temperature during an exothermic reaction?

Back

The temperature increases.

Front

How do the properties of a product compare to its reactants?

Back

The product will have new properties.

Front

What type of structure is an extended structure?

Back

A structure that consists of a large number of atoms bonded together in a repeating pattern.

Front

What is the atomic composition of ethane?

Back

2 carbon, 4 hydrogen.

Front

Define an exothermic reaction.

Back

A reaction that releases energy, usually in the form of heat.

Front

What is a reactant?

Back

A substance that undergoes a chemical change in a reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.