Across
- 3. Property A characteristic of matter that describes how it reacts with other substances to form new substances. Examples include flammability and reactivity.
- 8. A combination of two or more substances where each keeps its own properties. Examples include salad and air.
- 12. A mixture that looks the same throughout because its components are evenly distributed. Examples include sugar water and air.
- 14. A pure substance made of only one kind of atom. Examples include oxygen, gold, and carbon.
- 16. A process used to separate mixtures based on differences in boiling points. For example, distilling seawater can produce fresh water.
Down
- 1. A mixture where the different parts are visible and not evenly mixed. Examples include a salad and a bowl of mixed nuts.
- 2. The smallest unit of an element that retains the properties of that element. Atoms are the building blocks of matter.
- 4. A substance made of two or more different elements that are chemically combined. Examples include water (H₂O) and table salt (NaCl).
- 5. A type of matter that has the same properties throughout. Examples include water, gold, and air.
- 6. The force of gravity pulling on an object's mass. Weight can change depending on where you are, like on the Moon versus Earth.
- 7. Anything that takes up space and has mass. Everything around us is made of matter.
- 9. A group of two or more atoms bonded together. Molecules can be made up of the same or different elements.
- 10. Property A characteristic of matter that can be observed or measured without changing what the matter is. Examples include color, size, and melting point.
- 11. The amount of space that an object or substance occupies, usually measured in liters or cubic centimeters.
- 13. The amount of mass per unit of volume. It tells you how compact a substance is. For example, lead is denser than feathers.
- 15. The amount of matter in an object or substance, usually measured in grams or kilograms.