1st Semester Study Guide

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is the dependent variable in an experiment?

Back

The 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 testable question?

Back

A testable question is one that can be answered through experimentation and observation.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its chemical composition.

Front

What is a chemical property?

Back

A chemical property is a characteristic of a substance that can only be observed during a chemical reaction, indicating how it interacts with other substances.

Front

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

Back

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

Front

What is density?

Back

Density is the mass of a substance divided by its volume, and it is a constant property for a given substance.

Front

How does temperature affect the melting of ice cream?

Back

Higher temperatures generally cause ice cream to melt faster due to increased molecular movement.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change because it changes from solid to liquid but remains water.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change because it transforms into ash and gases, creating new substances.