Chemistry Basics Flashcards

Front

What is the definition of Chemistry?

Back

The study of the composition, properties, and reactions of matter.

Front

What is matter?

Back

Anything that has mass and takes up space.

Front

An element is the simplest form of a _____.

Back

pure substance

Front

A _____ is a pure substance made of two or more elements in a fixed ratio.

Back

compound

Front

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

Back

A chemical change produces one or more new substances, while a physical change does not alter the chemical composition.

Front

List two clues that may indicate a chemical change has occurred.

Back

Any two of: unexpected color change, energy change (heat/light), gas formation (bubbles), or precipitate formation.

Front

What is the smallest particle of an element that retains the properties of that element?

Back

An atom.

Front

What are the three subatomic particles that make up an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge and location of a proton?

Back

A proton has a positive (+) charge and is located in the nucleus.

Front

What is the charge and location of a neutron?

Back

A neutron has no charge (0) and is located in the nucleus.