Chemistry Semester 1 Review

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or manipulated by the scientist in an experiment.

Front

What is a solute in a solution?

Back

A solute is the substance that is dissolved in a solvent to form a solution. In a sugar water solution, sugar is the solute.

Front

How do you calculate density?

Back

Density is calculated using the formula: Density = Mass / Volume.

Front

What is the density of a substance with a mass of 25 g and a volume of 5 mL?

Back

The density is 5 g/mL.

Front

What does 'neutral' mean in chemistry?

Back

In chemistry, 'neutral' refers to a state where there is no net charge, meaning the number of positive and negative charges are equal.

Front

What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which changes in response to the independent variable.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

What is the role of constants in an experiment?

Back

Constants are the factors that remain unchanged throughout an experiment to ensure that the results are valid.

Front

What is the formula for calculating the volume of a rectangular prism?

Back

Volume = Length × Width × Height.

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.