Physical Science Final Exam Semester end

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. In the provided experiment, it is the type of liquid given to the plants.

Front

What is an electron?

Back

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom.

Front

What is a liquid?

Back

A liquid is a state of matter that has a definite volume but no definite shape, meaning it takes the shape of its container.

Front

Why do noble gases rarely form compounds?

Back

Noble gases rarely form compounds because they are already stable, having a full valence shell of electrons.

Front

What does the symbol (s) represent in a chemical equation?

Back

The symbol (s) stands for solid, indicating that the substance is in solid form.

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 neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom that has no charge (neutral).

Front

What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom.

Front

What is plasma?

Back

Plasma is a state of matter similar to gas but with charged particles, often found in stars, including the sun.

Front

What is the difference between a solid and a liquid?

Back

A solid has a definite shape and volume, while a liquid has a definite volume but takes the shape of its container.