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chemistry crossword!!!

Ellira + Sophie

1 2
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19               20          

Across
4.adhesion of species onto the surfaces of particles
7.the freezing point
11.elements in a horizontal row on the periodic table
12.the capacity to do work or transfer heat
13.a description of a chemical reaction by placing formulas of the reactants on the left and the formulas of products on the right of an arrow
17.a group of atoms derived from an alkane by the removal of one hydrogen atom
18.substance of two or more elements in fixed proportions
19.a subatomic particle having mass of 0.00054858 and a charge of one
20.anything that has mass and occupies space
Down
1.a measure of a amount of matter in a object
2.a very slightly soluble compound
3.a substance which speeds up the chemical reaction without being consumed itself in the reaction
5.a change in which one or more new substances are formed
6.mass per unit Volume
8.a vertical column in the periodic table ; also called a family
9.the temperature at which the vapour pressure of a liquid that is equal to the applied pressure
10.an atom or a group of atoms with an electrical charge
14.a substance that cannot be decomposed into simpler substances by chemical means
15.a form of energy that flows between two samples of matter because of their differences in temperature
16.combinations of symbols that indicates the chemical composition of a substance

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