Elements, Compounds, Chemical Formulas and Equations

Front

What are the new substances formed after a chemical reaction called?

Back

Products

Front

In a chemical equation, what does the arrow represent?

Back

Yield

Front

What two particles are found in the nucleus of an atom?

Back

Protons and Neutrons

Front

What is the center of an atom called?

Back

Nucleus

Front

What is the force that holds atoms together?

Back

Chemical bond

Front

What is a substance made of two or more elements chemically combined?

Back

Compound

Front

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

Back

Atom

Front

What is a pure substance that cannot be broken down into simpler substances?

Back

Element

Front

What is the chemical formula for water?

Back

H2O

Front

What do we call a reaction that absorbs energy?

Back

Endothermic reaction