Chemistry Year 10 glossary

Atom

• The biggest piece of matter

• The smallest piece of matter

• The weirdest piece of matter

• The only piece of matter

Proton

• A subatomic particle that has a negative charge and that is found in the shells of an atom

• A subatomic particle that has a positive charge and that is found in the shells of an atom

• A subatomic particle that has a negative charge and that is found in the nucleus of an atom

• A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Neutron

• A subatomic particle that has no charge and that is found in the nucleus of an atom

• A subatomic particle that has a positive charge and that is found in the nucleus of an atom

• A subatomic particle that has no charge and that is found in the shells of an atom

• A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Electron

• A subatomic particle that has a positive charge that orbits the nucleus of an atom

• A subatomic particle that has a negative charge that orbits the nucleus of an atom

• A subatomic particle that has a negative charge that is in the nucleus of an atom

• A subatomic particle that has a neutral charge that orbits the nucleus of an atom

Molecule

• Two or more atoms physically bonded together

• One atom chemically bonded to itself

• Two or more atoms chemically bonded together

Element

• A pure substance made of only one kind of atom. Found on the periodic table.

• An impure substance made of only one kind of atom. Found on the periodic table.

• A pure substance made of many kinds of atoms. Not found on the periodic table.

• An impure substance made of many kinds of atoms.

Compound

• A substance made up of atoms of two or more different elements joined by physical bonds

• Two or more atoms chemically bonded together

• A substance made up of one element

• A substance made up of atoms of two or more different elements joined by chemical bonds

Periodic Table

• A collection of all known elements arranged in order of increasing atomic number

• A collection of all known elements arranged in order of decreasing atomic number

• A collection of all known elements arranged in order of increasing mass number

• A collection of all known elements arranged in order of decreasing mass number

Atomic number

• The number of electrons in an atom. It identifies the element

• The number of protons in the orbitals of an atom.

• The number of protons in the nucleus of an atom. It identifies the element

• Doesn't identify the element

Mass number

• The number of neutrons and protons in the nucleus of an atom

• The number of neutrons in the nucleus of an atom

• The number of protons in the nucleus of an atom

• The number of electrons and protons in an atom