Q2 ULTIMATE EXAM REVIEW- 8th GRADE 24-25

Front

What is a solution?

Back

A mixture containing two or more substances that has the same properties throughout.

Front

What process is demonstrated when sugar dissolves in water?

Back

How two pure substances can be combined to form a solution.

Front

In which state of matter do atoms and molecules have the most energy?

Back

In a gas.

Front

What is the composition of an atom with 2 protons, 2 neutrons, and 2 electrons?

Back

This is an atom with 2 protons, 2 neutrons, and 2 electrons.

Front

Which substance is the most acidic: lemon juice, orange juice, distilled water, or household lye?

Back

Lemon juice.

Front

What is the definition of an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of two or more substances that are not chemically combined, while a compound is a substance formed when two or more elements are chemically bonded.

Front

What happens to the energy of molecules as temperature increases?

Back

The energy of molecules increases, causing them to move faster.

Front

What is pH a measure of?

Back

The acidity or basicity of a solution.

Front

What is a characteristic of a basic solution?

Back

It has a pH greater than 7.