Across
- 3. a substance that dissolves in water to form hydroxide ions (OH-)that can accept hydrogen ions
- 4. the process by which particles in a solution are evenly distributed throughout the solvent by Brownian motion
- 5. a particle consisting of two or more atoms covalently bonded together, formed between two nonmetals
- 8. a pure substance made from two or more elements that are chemically combined
- 9. anything that takes up space and has mass
Down
- 1. a substance that is present before a chemical reaction and takes part in it. It is usually shown on the left-hand side of a chemical equation.
- 2. A change in substance that does not change the identity of the substance (a change of form or state)
- 3. an electrostatic attraction that forms between atoms when they share or transfer electrons
- 6. a naturally occurring catalyst, usually a protein.
- 7. the building blocks of matter; the smallest possible particle of an element
- 8. a substance that changes the rate of a chemical reaction but is not itself used up or affected by the reaction