Across
- 5. / A pure substance made of two or more elements that are chemically combined.
- 8. / The force that holds atoms together in a molecule or compound.
- 10. / Anything that has mass and takes up space. Everything around you — air, water, rocks, and even your body — is made of matter.
- 11. / A chart that organizes all known elements based on their properties (like metal or nonmetal) and atomic number.
Down
- 1. / The smallest unit of matter that keeps the properties of an element.
- 2. / How tightly packed the matter in an object is. It tells us how heavy something is for its size (Density = Mass ÷ Volume).
- 3. / A material that is made of only one type of particle.
- 4. / Two or more atoms joined together by chemical bonds.
- 6. / The amount of matter in an object. It doesn’t change even if you go to the Moon or another planet.
- 7. / The amount of space an object or substance takes up. You can measure it in liters (L) or cubic centimeters (cm³).
- 8. / A solid material where the atoms are arranged in a regular, repeating pattern.
- 9. / The force of gravity pulling on an object’s mass.
- 12. / A pure substance made of only one type of atom.