Most Missed Questions/Skills Unit 3

Front

What is an independent variable?

Back

An independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing the substance's chemical identity.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that becomes evident during a chemical reaction, indicating how a substance interacts with other substances.

Front

What happens during a chemical reaction?

Back

During a chemical reaction, atoms rearrange to form new molecules or compounds.

Front

What is hardness in terms of material properties?

Back

Hardness is a physical property that describes a material's resistance to deformation or scratching.

Front

What does brittleness mean?

Back

Brittleness is a physical property that describes a material's tendency to break or shatter easily under stress.

Front

How does flavor affect ice cream melting?

Back

The flavor of ice cream is an independent variable that can be tested to see if it affects the rate at which the ice cream melts.

Front

What is the role of control in an experiment?

Back

A control is a standard for comparison in an experiment, ensuring that the results are due to the independent variable.

Front

What is the difference between qualitative and quantitative observations?

Back

Qualitative observations describe characteristics or qualities (e.g., color, texture), while quantitative observations involve measurements and numbers (e.g., height, weight).