Honors Chemistry Final Test Revision - Units 1, 2, and 3

Front

Why should an experiment be repeated?

Back

To reduce the chance of error.

Front

How many independent variables can be tested in a controlled experiment?

Back

One.

Front

What subatomic particle determines the identity of an element?

Back

Protons.

Front

What is a diatomic molecule?

Back

A molecule composed of two atoms, which can be of the same or different elements.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is a controlled experiment?

Back

An experiment where only one variable is changed at a time to isolate the effects of that variable.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics, while quantitative data involves numerical measurements.

Front

What is a hypothesis?

Back

A testable prediction about the relationship between variables.

Front

What is the purpose of a control group in an experiment?

Back

To provide a baseline for comparison against the experimental group.