Chemistry Crossword

1. A substance that speeds up a chemical reaction without being consumed in the process.
3. A substance composed of only one type of atom, characterized by its atomic number.
7. The smallest unit of an element, consisting of a nucleus (protons and neutrons) and electrons orbiting the nucleus.
9. A substance formed when two or more different elements chemically combine in fixed proportions.
10. Formula A representation of a compound's composition using symbols and subscripts to indicate the number of atoms of each element.
11. A measure of the acidity or alkalinity of a solution, with values ranging from 0 (acidic) to 14 (basic).
12. Bond The force that holds atoms together in compounds; can be covalent or ionic.
13. A substance that releases hydrogen ions (H+) in solution, often with a sour taste.

1. Equation A symbolic representation of a chemical reaction, showing the reactants and products.
2. Table A chart that organizes all known chemical elements based on their atomic number and chemical properties.
4. A group of atoms bonded together; the smallest unit of a compound.
5. A substance that can accept hydrogen ions (H+) in solution, often with a bitter taste and slippery feel.
6. Electrons Electrons in the outermost energy level of an atom, responsible for chemical bonding and reactivity.
8. Bond A type of chemical bond formed by the transfer of electrons from one atom to another.
10. Reaction The process in which substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.