Chemistry Assessment

Front

What is a coefficient in a chemical equation?

Back

The large number to the left of a formula that indicates the number of molecules or moles of that substance.

Front

What is the chemical formula for phosphoric acid?

Back

H₃PO₄

Front

Which of the following is NOT considered matter? Gravity, Carbon atoms, Bacteria, Air

Back

Gravity

Front

What is an example of a physical property? Silver is shiny, Alcohols are flammable, Alkali metals are reactive with water, Acids are sometimes corrosive

Back

Silver is shiny.

Front

What is the product of the reaction between PCl₅ and H₂O?

Back

HCl and H₃PO₄

Front

What does the term 'matter' refer to?

Back

Anything that has mass and occupies space.

Front

What is the difference between an acid and a base?

Back

Acids donate protons (H⁺ ions) in a solution, while bases accept protons.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the law of conservation of mass?

Back

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