C1 Atomic structures Crossword

the mixture made by adding a soluble substance to water
the smallest part of an element that can still be recognised as that element
the number of protons (which equals the number of electrons) in an atom. It is sometimes called the proton number
a symbol equation in which there are equal numbers of each type of atom on either side of the equation
fuel made from animal or plant products
the process whereby small amounts of dissolved substances are separated by running a solvent along a material such as absorbent paper
a substance made when two or more elements are chemically bonded together
a tiny particle with a negative charge
a set of numbers to show the arrangement of electrons in their shells (or energy levels)
a substance made up of only one type of atom
all the elements in the columns in the periodic table
a charged particle produced by the loss or gain of electrons
atoms that have the same number of protons but different number of neutrons
the total mass of the products formed in a reaction is equal to the total mass of the reactants
the number of protons plus neutrons in the nucleus of an atom
a dense particle found in the nucleus of an atom. It is electrically neutral, carrying no charge
the very unreactive gases found in Group 0 of the periodic table
he very small and dense central part of an atom that contains protons and neutrons
an arrangement of elements in the order of their atomic numbers, forming groups and periods
a substance made as a result of a chemical reaction
a tiny positive particle found inside the nucleus of an atom
a substance we start with before a chemical reaction takes place
an area in an atom, around its nucleus, where electrons are found
the abbreviations used in balanced symbol equations to show if reactants and products are solid (s), liquid (l), gas (g) or dissolved in water (aq)
an equation that helps you see how much of each substance is involved in a chemical reaction by showing the chemical symbols and formulae of all the reactants and products involved
a way of describing what happens in a chemical reaction by showing the names of all reactants and the products they form