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Year 10 - Chemistry

Across
The smallest particle of a chemical element that can exist.
Group 1 of the periodic table, including Lithium, Sodium and Potassium: _______ Metals
Heavy, neutrally charged fundamental particle
An equation showing a chemical reaction with the reactants and products written out (two words, 4,8)
A substance that has only one type of atom or molecule
The three types of particle that make an atom: _______ Particles
Very light, negatively charged subatomic particle
The substances made in a chemical reaction
A force holding atoms together.
A description of a molecule showing the different atoms in that molecule, the chemical ________
Down
Heavy, positively charged subatomic particle
A substance of two (or more) atoms or molecules that are not joined chemically
Defined region of an atom that can hold a certain number of electrons
Number that tells how many protons an atom has, the ______ Number
An electron in the outermost orbital of an atom.
A substance containing just one kind of atom.
A substance which is made up of two or more different elements, chemically bonded together.
The substance used up in a chemical reaction
Group 17 of the Periodic Table, including Fluorine, Chlorine and Bromine
A pair or group of atoms bonded together.