STAAR Science Chemistry Review

Front

What is the overall charge of an atom?

Back

Neutral

Front

What type of reaction occurs when baking soda and vinegar are mixed, producing fizz and carbon dioxide?

Back

Chemical

Front

What is the formula for density?

Back

Density = mass / volume

Front

What are the positive particles of an atom called?

Back

Protons

Front

If the number of protons equals the number of _____, what is the charge of the atom?

Back

No charge (electrons)

Front

What is the smallest unit of an element that retains its properties?

Back

Atom

Front

What is the term for a substance made of two or more elements chemically bonded together?

Back

Compound

Front

What is the process called when a solid turns into a gas without becoming a liquid?

Back

Sublimation

Front

What is the term for the negatively charged particles in an atom?

Back

Electrons

Front

What is the center of an atom called, which contains protons and neutrons?

Back

Nucleus