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Science crossword

Across
The rate at which something occurs or is repeated over a particular period of time.
A substance that produces an electrically conducting solution when dissolved in a polar solvent.
A composite particle made of quarks held together by the strong force.
The basic unit of a chemical element.
A molecule or entity that can donate a proton or accept an electron pair in reactions.
Solutions where one cannot tell two substances have been mixed.
An organic compound containing the group CHO.
A theory of matter and energy based on the concept of quanta.
A particle that makes up the atomic nucleus.
The property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent.
A particular kind of matter with uniform properties.
A substance in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance.
Able to dissolve other substances.
Down
Of a reaction or process accompanied by the release of heat.
Of a reaction or process accompanied by or requiring the absorption of heat.
Any of a material's properties that become evident during, or after, a chemical reaction.
The spreading of something more widely.
A thing or substance used as an insulator.
The branch of chemistry or biochemistry concerned with measuring and studying the rates of reactions.
A thing that is composed of two or more separate elements; a mixture.
Anything that has mass or takes up space.
The branch of science concerned with the chemical and physicochemical process that occur within living organisms.
Each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter.
An airlike fluid substance which expands freely to fill any space available, irrespective of its quantity.
The action of making a liquid more dilute.