Unit 4 Vocab

3. a positively charged ions that are formed when an atom loses one or more electrons
6. a chemical reaction that absorbs heat from its surroundings
11. states that mass cannot be created or destroyed in a chemical reaction
12. a substance that undergoes a chemical reaction
14. the speed at which a chemical reaction takes place
15. a type of chemical bond that forms between two atoms when one atom transfers electrons to another atom
16. a force of attraction between atoms that holds them together in a molecule

1. a chemical reaction that releases heat energy to its surroundings
2. a process in which substances, called reactants, undergo a chemical change to form new substances, called products
3. a type of chemical bond that involves the sharing of electrons between atoms
4. a type of chemical reaction where two or more substances combine to form a new, more complex substance.
5. substances that increase the rate of a chemical reaction without being consumed in the process
7. a negatively charged ion
8. the system or set of rules used to name or classify things, such as organisms, diseases, drugs, or other scientific concepts
9. the process by which organic matter, such as plants, animals, or human bodies, break down into simpler substances
10. A substance formed as a result of a chemical reaction
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