FINAL REVIEW

Front

What is the most likely element to give up a SINGLE electron?

Back

Lithium (Li) is the most likely element to give up a single electron due to its position in the alkali metals group.

Front

What happens to the amount of product produced when CaCO3 is heated?

Back

The amount produced will INCREASE when CaCO3 is heated, as heat speeds up the reaction.

Front

Which element has EIGHT valence electrons?

Back

Neon (Ne) has eight valence electrons, making it a noble gas.

Front

How can you test if a gas-powered engine is 100% efficient?

Back

Feel to see if the car's engine is warm. If the engine is warm, it indicates that some heat energy is lost, proving the engine is not 100% efficient.

Front

What causes lightning over a part of Earth's surface?

Back

Lightning occurs when POSITIVELY charged clouds are attracted to NEGATIVELY charged ground below.

Front

What is a valence electron?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of a chemical reaction that produces gas?

Back

The reaction of vinegar and baking soda produces carbon dioxide gas.

Front

What is the difference between an endothermic and exothermic reaction?

Back

An endothermic reaction absorbs heat, while an exothermic reaction releases heat.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.