Science TCAP Practice

Front

What is corrosion?

Back

Corrosion is the gradual destruction or wearing away of a material, often metals, due to chemical reactions with the environment.

Front

What is a nonreactive chemical?

Back

A nonreactive chemical is a substance that does not easily undergo chemical reactions, making it suitable for coating metals to prevent corrosion.

Front

What is ozone?

Back

Ozone is a molecule composed of three oxygen atoms (O3) that helps protect Earth from harmful ultraviolet rays.

Front

What is the ozone layer?

Back

The ozone layer is a region of Earth's stratosphere that contains a high concentration of ozone and protects the planet from ultraviolet radiation.

Front

What are trace gases?

Back

Trace gases are gases present in the atmosphere in very small amounts, such as carbon dioxide, water vapor, and methane.

Front

What is the significance of atmospheric gases?

Back

Atmospheric gases are essential for life on Earth, influencing climate, weather, and the health of ecosystems.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it remains constant.

Front

What are reactants in a chemical reaction?

Back

Reactants are the starting substances that undergo a chemical change during a reaction.

Front

What are products in a chemical reaction?

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Products are the substances formed as a result of a chemical reaction.

Front

How do you determine if a molecule is elemental?

Back

To determine if a molecule is elemental, ask what elements are present in the molecule.