Chemistry Midterm Study Guide Chapter 1 Vocab

12345678910111213141516171819202122232425
Across
  1. 5. The amount of matter in an object; usually measured in grams or kilograms
  2. 7. the branch of science that deals with the identification of the substances of which matter is composed
  3. 9. – A reaction or process that absorbs energy, usually as heat, from its surroundings.
  4. 11. Model – A representation of an object, system, or process used to explain and predict phenomena
  5. 12. – A solid solution of two or more metals (or a metal and another element) that has metallic properties (e.g., steel, brass).
  6. 14. of Conservation of Mass – Mass cannot be created or destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.
  7. 16. – Matter that has a uniform and definite composition; can be an element or compound.
  8. 17. – A substance that evaporates easily at normal temperatures.
  9. 20. Change – A change in which one or more substances are transformed into new substances with different properties
  10. 21. – Descriptions of matter that do involve numbers (e.g., mass, volume, temperature).
  11. 23. Anything that has mass and takes up space
  12. 24. Property – A characteristic of a substance that describes its ability to change into a new substance (e.g., flammability, reactivity).
  13. 25. – The mass of a substance per unit volume (Density = Mass ÷ Volume).
Down
  1. 1. – A characteristic of matter that can be observed or measured
  2. 2. Change – A change that affects the form of a substance but does not change its chemical identity (e.g., melting, cutting).
  3. 3. Property – A characteristic of a substance that can be observed without changing its chemical composition (e.g., color, density, melting point).
  4. 4. Reaction – A process in which substances (reactants) change chemically to form new substances (products).
  5. 6. Solution – A solution where water is the solvent.
  6. 8. – A pure substance made of two or more elements chemically combined in a fixed ratio.
  7. 9. – A reaction or process that releases energy, usually as heat, to its surroundings.
  8. 10. – A combination of two or more substances that are not chemically bonded and can be separated physically.
  9. 13. – Descriptions of matter that do not involve numbers (e.g., color, texture, odor).
  10. 15. – A symbolic representation of the elements in a compound and their proportions (e.g., H₂O, CO₂).
  11. 16. – A homogeneous mixture where one substance (solute) is dissolved in another (solvent).
  12. 18. – The capacity to do work or produce change; can be stored (potential) or in motion (kinetic).
  13. 19. – The substance that is dissolved in a solution.
  14. 22. – A pure substance made of only one type of atom.