Across
- 4. is done when a force acts on a moving object in the same or opposite direction of its motion or when energy is transferred from one object to another.
- 5. The change from one pure substance to another by the rearrangement of atoms in a chemical reaction. We typically recognize chemical changes by a change in color, change in energy, formation of a gas, and/or formation of a solid.
- 6. Scientific law that states that matter and energy cannot be created or destroyed, but can only transfer between objects or transform to a different form. Also called the law of conservation of matter and energy.
- 7. A charged atom or group of atoms caused by a charge imbalance, which is produced by an unequal number of protons and electrons.
- 8. A change in matter that doesn't alter its chemical identity. Physical changes include changes of state, changing shape, polishing, dissolving, etc.
- 10. One of the four principal conditions in which matter exists-solid, liquid, gas, and plasma
- 15. a fluid state of matter made of extremely high temperature ionized particles
- 17. the process by which a liquid turns into a gas
- 19. A pure substance formed by chemically combining two or more elements.
- 21. a material made up of two or more different substances
- 23. the process by which water vapor in the air is changed into liquid water
- 26. the process of changing from a solid to a gas without passing through an intermediate liquid phase
- 28. process that causes a substance to change from a liquid to a solid
- 29. the measure of hotness or coldness expressed in terms of any of several scales
- 30. temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid
Down
- 1. The amount of space that an object occupies
- 2. The attractive force between any two objects based on their masses. The strength of gravity decreases rapidly as the two objects move apart.
- 3. the conversion of a solid or a liquid into a gas
- 9. a fluid state of matter
- 11. The measure of the amount of matter in an object
- 12. A pure substance made of only one kind of atom.
- 13. material substance that constitutes the observable universe
- 14. a state of matter that has no fixed shape and no fixed volume
- 16. A charged atom or group of atoms caused by a charge imbalance, which is produced by an unequal number of protons and electrons.
- 18. the laying down of sediment carried by wind, flowing water, the sea or ice
- 20. speaking of something that contains only one kind of matter
- 22. Two or more chemically bonded atoms. Molecules can be made of just one kind of element or a combination of elements
- 24. The force of gravitational attraction between an object's mass and its resident planet.
- 25. one of the three main states of matter
- 27. change of a solid into a liquid when heat is applied