Chemistry Exam

Front

What type of chemical reaction is represented by the equation Ca + MgCl2 --> CaCl2 + Mg?

Back

Single Replacement: A reaction where one element replaces another in a compound.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond that occurs between a metal and a nonmetal, where electrons are transferred from one atom to another.

Front

How many protons does an atom with atomic number 6 have?

Back

6 protons: The atomic number of an element is equal to the number of protons in its nucleus.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What state of matter is characterized by having a definite volume but no definite shape?

Back

Liquid: Liquids take the shape of their container but maintain a constant volume.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

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.

Front

What is a reactant in a chemical reaction?

Back

A reactant is a substance that undergoes change during a chemical reaction.