Across
- 5. a change or improvement
- 8. A transfer of thermal energy due to the temperature difference between two objects.
- 12. The process by which a gas turns into a liquid
- 16. Two or more atoms connected by a chemical bond
- 20. A labeled drawing that explains or shows the parts of something; a type of model
- 21. A change that occurs when one or more substances are changed into entirely new substances with different properties
- 25. the type of property that is a characteristic of a substance that requires a chemical reaction to observe
- 28. the type of experiment in which one variable is changed and all others are kept the same
- 29. may also be called states of matter
- 30. Any factor that could affect the results of an experiment
- 31. Describes the amount of substance (the solute) that can dissolve in another (the solvent).
- 33. Substances that make up the universe; has mass and volume
- 35. The process by which a liquid turns into a gas at its boiling point
Down
- 1. The variable in an experiment that the experimenter purposefully changes in order to determine its effect
- 2. A form of kinetic energy associated with molecules in motion.
- 3. The mass of a substance that fills one unit of volume. It is usually measured in grams per cubic centimeter (g/cm3).
- 4. A state (or phase) of matter in which a substance has a definite volume but no definite shape; take the shape of the part of the container they occupy
- 6. The variable in an experiment whose value is determined by the experiment
- 7. A group of objects that function together as one unit; also, the set of related objects under study or consideration
- 9. the smallest unit of matter that cannot be broken down by ordinary chemical reactions
- 10. The measure of how hot an object is.
- 11. The amount of space occupied by a sample of matter
- 13. Solids, liquids, and gases are three of these
- 14. To make an educated guess about the outcome of a situation
- 15. All the characteristic properties of a substance that can be measured or observed without changing the type of matter
- 17. a phase (or state) of matter in which a substance has a definite shape and volume
- 18. A measure of the amount of matter in an object
- 19. A chemical property describing whether or not a substance can combust
- 22. To change from a liquid to a gas at or below the boiling point
- 23. The process during which a homogenous mixture forms; The particles of the solute spread evenly throughout the solvent, so that they are no longer visible.
- 24. A physical property that describes the ability of a material to be shaped, flattened, or otherwise deformed without breaking
- 25. A solid that contains atoms arranged in an organized way
- 26. A tool scientists and engineers use to represent ideas or provide an explanation; may include diagrams, drawings, physical replicas, mathematical representations, analogies, or computer simulations
- 27. Chemical and physical properties that define attributes of a pure substance and are independent of the sample amount; can be used to identify pure substances
- 32. A very small piece of matter; includes atoms and molecules.
- 34. energy associated with moving objects
- 36. A state (or phase) of matter in which a substance has no definite shape or volume.