Across
- 2. A process that involves the transformation of one or more substances into different substances with new chemical and physical properties. This often involves the formation of gas, precipitate, or color change.
- 4. The transfer of energy through electromagnetic waves, which can occur in a vacuum (like space) and does not require a medium.
- 8. Energy: The energy an object possesses due to its motion, which increases as the speed of the object increases.
- 9. A combination of two or more substances where each retains its own properties. Mixtures can be homogeneous or heterogeneous.
- 10. A solid that forms and settles out of a liquid mixture during a chemical reaction.
- 14. Substances that undergo a chemical change in a reaction. They are found on the left side of a chemical equation.
- 15. Substances formed when two or more elements chemically combine in fixed ratios. Compounds have different properties than the elements that compose them.
- 17. A form of energy that is transferred between systems or objects with different temperatures, moving from the hotter to the cooler object.
- 18. Change: A transition between solid, liquid, and gas states of matter. Phase changes include melting, freezing, boiling, and condensation.
- 19. A measure of the average kinetic energy of the particles in a substance, which determines how hot or cold that substance is.
- 22. Homogeneous mixtures where one substance (the solute) is dissolved in another (the solvent). Solutions can be solid, liquid, or gas.
Down
- 1. Formula: A way of representing the composition of a compound using symbols for the elements and numbers to indicate the ratio of atoms. For example, H2O Two Hydrogen atoms to One Oxygen atom
- 3. Substances that are formed as a result of a chemical reaction. They are found on the right side of a chemical equation.
- 5. Symbol: A one or two-letter notation used to represent an element. For example,O stands for oxygen and Na stands for sodium.
- 6. The amount of solute present in a given volume of solvent or solution. It indicates how strong or weak a solution is.
- 7. Pure substances that cannot be broken down into simpler substances. They are the building blocks of matter and are made up of atoms.
- 11. The substance that is dissolved in a solution. It is usually present in a smaller amount compared to the solvent.
- 12. The substance in a solution that dissolves the solute. It is usually present in the largest amount.
- 13. The process by which heat energy is transferred through direct contact between materials, often occurring in solids.
- 16. Energy: The total energy of all the particles in a substance, which is related to the temperature and can be transferred as heat.
- 20. A change in which the form or appearance of a substance changes, but its chemical composition remains the same. Examples include melting and freezing.
- 21. The transfer of heat through the movement of fluids (liquids or gasses) caused by differences in temperature and density.