Unit 1.4- Atoms, Elements, Molecules, & Compounds

Front

What is at the center of every atom?

Back

A nucleus.

Front

What do we call a chemical substance made up of 2 or more different types of elements bonded together?

Back

A compound.

Front

What is an ion?

Back

An atom that is electrically charged by gaining or losing electrons.

Front

How many Hydrogen atoms are present in H₂O?

Back

2.

Front

Which part of an atom has no charge?

Back

Neutrons.

Front

What is an atom?

Back

The basic unit of a chemical element.

Front

What are elements?

Back

Pure substances that cannot be broken down into simpler substances.

Front

What is a molecule?

Back

Two or more atoms bonded together.

Front

What is the difference between an atom and a molecule?

Back

An atom is a single unit, while a molecule is a group of two or more atoms bonded together.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.