Front

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

Back

Protons and neutrons.

Front

What role do enzymes play in chemical reactions?

Back

Enzymes speed up the chemical reaction.

Front

What is a reactant in a chemical reaction?

Back

The substances we start with; what reacts.

Front

What are the columns on the periodic table called?

Back

Groups or families.

Front

Why is carbon unique in forming compounds?

Back

Carbon has 4 valence electrons and can form 4 chemical bonds with other atoms.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is a covalent bond?

Back

A chemical bond formed by the sharing of electrons between atoms.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond involves the transfer of electrons, while a covalent bond involves the sharing of electrons.

Front

What is a molecule?

Back

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the pH scale?

Back

A scale used to measure how acidic or basic a solution is, ranging from 0 to 14.