What does the atomic number represent?

which subatomic particles have no charge (they are neutral)?

What is a subatomic particle with a positive charge?

The amount of matter in an object

the amount of space an object takes up

Mass/Volume

Which particles make up the nucleus of an atom? (you can choose more than one answers)

The size of the negative charge of an electron is exactly the same as the size of the positive charge on a proton. What is the overall charge of the helium atom shown in the diagram?

Electrons have less mass than protons do

Electrons are found in the nucleus of the atom

The atomic _____ tells you how many protons are there in an atom.

A negatively charged particle, located in the outermost shell of an atom.

An element which has the same number of protons and electrons having no net charge.

This universal law states that like charges repel and unlike charges attract.

Electrons move around_________________the nucleus

The modern periodic table is organized by _________________ atomic number.

A ___________________ is a combination of two or more atoms that are held together by covalent bonds.

Atoms are made up of ________________

The subatomic particles that make up an atom.

The smallest part of any element. Made up of protons, neutrons and electrons.

The mass number is always larger than the atomic number (exept for Hydrogen).