Properties of Matter

3. Anything that has mass and takes up space.
4. The temperature at which a liquid changes to a gas.
8. A state of matter with a definite volume but no definite shape, where particles can move past each other.
9. Two or more atoms chemically bonded together, which can be elements or compounds.
13. The amount of space an object or substance occupies, measured in liters or cubic centimeters.
14. The temperature at which a solid changes to a liquid.
16. A characteristic of matter that can be observed or measured without changing the substance, such as color, density, or melting point.
17. The physical form in which matter exists, including solid, liquid, gas, and plasma.
19. A pure substance made of only one kind of atom, found on the periodic table.
20. The smallest unit of an element that retains its chemical properties.

1. A high-energy state of matter found in stars and lightning, where atoms lose electrons.
2. The amount of mass in a given volume of a substance, calculated as Density = Mass ÷ Volume.
5. A change that affects the form of a substance but not its chemical composition, such as melting, freezing, or breaking.
6. The temperature at which a liquid changes to a solid.
7. A substance made of two or more different elements that are chemically bonded together.
10. A state of matter with a definite shape and volume, where particles are tightly packed.
11. A change that creates a new substance with different properties, such as burning or rusting.
12. A characteristic that describes how a substance can change into a different substance, such as flammability or reactivity.
15. A state of matter with no definite shape or volume, where particles move freely and spread apart.
18. The amount of matter in an object, usually measured in grams or kilograms.