Unit 4 Vocab

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Across
  1. 3. a positively charged ions that are formed when an atom loses one or more electrons
  2. 6. a chemical reaction that absorbs heat from its surroundings
  3. 11. states that mass cannot be created or destroyed in a chemical reaction
  4. 12. a substance that undergoes a chemical reaction
  5. 14. the speed at which a chemical reaction takes place
  6. 15. a type of chemical bond that forms between two atoms when one atom transfers electrons to another atom
  7. 16. a force of attraction between atoms that holds them together in a molecule
Down
  1. 1. a chemical reaction that releases heat energy to its surroundings
  2. 2. a process in which substances, called reactants, undergo a chemical change to form new substances, called products
  3. 3. a type of chemical bond that involves the sharing of electrons between atoms
  4. 4. a type of chemical reaction where two or more substances combine to form a new, more complex substance.
  5. 5. substances that increase the rate of a chemical reaction without being consumed in the process
  6. 7. a negatively charged ion
  7. 8. the system or set of rules used to name or classify things, such as organisms, diseases, drugs, or other scientific concepts
  8. 9. the process by which organic matter, such as plants, animals, or human bodies, break down into simpler substances
  9. 10. A substance formed as a result of a chemical reaction
  10. 13. a concept in chemistry that states that atoms tend to gain, lose, or share electrons in order to achieve a stable electron configuration with eight electrons in their outermost energy level