Across
- 1. A scale measuring the acidity or alkalinity of a solution, ranging from 0 (acidic) to 14 (basic).
- 3. The smallest unit of matter that retains the properties of an element.
- 5. A negatively charged subatomic particle that orbits the nucleus of an atom.
- 7. A group of atoms bonded together, representing the smallest unit of a chemical compound.
- 8. An atom or molecule with a net electric charge due to the loss or gain of electrons.
- 9. A substance that accepts protons (H⁺ ions) or donates electrons in a chemical reaction.
- 12. A process where substances (reactants) transform into new substances (products).
- 13. A substance formed when two or more elements are chemically bonded together.
Down
- 1. A positively charged subatomic particle found in the nucleus of an atom.
- 2. Refers to the periodic table, which organizes elements by atomic number and properties.
- 4. The amount of matter in an object, often measured in grams or kilograms.
- 5. A pure substance consisting of only one type of atom, defined by its atomic number.
- 6. A neutral subatomic particle found in the nucleus of an atom.
- 10. A substance that donates protons (H⁺ ions) or accepts electrons in a chemical reaction.
- 11. A force that holds atoms together in a molecule, such as ionic or covalent bonds.