Atoms Knowledge Check

In this principal state the particles have a fixed volume, are tightly packed together, and vibrate slightly.

• Solid

• Liquid

• Gas

In this principal state of matter the particles move freely amongst themselves and have an almost fixed volume but no set shape.

• Solid

• Liquid

• Gas

In this principal state of matter the particles have no fixed volume, with lots of space between the particles, and large amounts of kinetic energy.

• Solid

• Liquid

• Gas

This is the center of all atoms.

• Proton

• Electron

• Neutron

• Nucleus

Positively charged atomic particles are called

• Protrons

• Neutrons

• Electrons

• Nucleus

Negatively charged atomic particles are known as:

• Protons

• Neutrons

• Electrons

• Nucleus

Uncharged (no charged) atomic particles are known as:

• Protons

• Neutrons

• Electrons

• Nucleus

What does the atomic number represent?

• The number of neutrons in an atom.

• The number of protons + the number of Quarks in an atom.

• The number of protons + the number of neutrons in an atom.

• The number of protons in an atom.

What is the smallest particles of matter?

• Compounds

• Molecules

• Atoms

• Nucleus

Fill in the blank: Elements are made up of ________ type of atom.

• Two

• One

• Three

• Nine