Across
- 4. : A chemical reaction involving the rapid combination of a substance with oxygen, releasing heat and light.
- 8. : A process of separating a mixture of liquids based on their different boiling points.
- 9. : The smallest unit of an element that retains its properties.
- 10. : A pure substance that cannot be broken down into simpler substances by chemical means.
Down
- 1. : The minimum energy required for a chemical reaction to occur and initiate the breaking of bonds.
- 2. : A substance composed of two or more different elements chemically bonded together.
- 3. : A compound that releases hydrogen ions in water, with a pH less than 7.
- 4. : A substance that increases the rate of a chemical reaction without being consumed.
- 5. : A compound that accepts hydrogen ions in water, with a pH greater than 7.
- 6. :The combining capacity of an atom, determined by the number of electrons in its outermost shell.
- 7. Bond : A chemical bond formed by the sharing of electrons between atoms.