Chemistry Overview

1. What is the smallest basic unit of matter? cell ion atom molecule 2. An atom that has gained or lost an electron is a element ion molecule polar 3. Which type of bond is formed when a positively charged ion attracts a negatively charged ion? ionic hydrogen covalent metallic 4. A molecule consists of two or more atoms held together by... ionic bonds hydrogen bonds molecular bonds covalent bonds 5. The 4 elements that make up 96 percent of the human body's mass are... carbon, nitrogen, oxygen, and potassium carbon, hydrogen, nitrogen, and oxygen carbon, hydrogen, nitrogen, and phosphorous phosphorous, hydrogen, nitrogen, and oxygen 6. One type of atom, such as oxygen, is a molecule ion element neutron 7. A _ forms when one positively charged molecule is attracted to the negative end of another molecule. hydrogen bond covalent bond ionic bond municipal bond 8. When making Kool-aid with water and Kool-aid powder mix, the water is considered the... solution solvent solute compound 9. A mixture of substances that is the same throughout is a compound solvent solute solution 10. A molecule that has no overall charge (neutral) is called... polar nonpolar semipolar electrostatic 11. A molecule that has a positively charged end and a negatively charged end is called... polar nonpolar semipolar electrostatic 12. A water molecule carries a negative charge on one end and a positive charge on the other. Due to these charges, it is classified as... polar nonpolar semipolar electrostatic 13. A nitrogen atom gains 3 electrons. This ion would now carry what overall charge? +3 -3 0 -1 14. A potassium atom loses 1 electron. This ion would now carry what overall charge? +1 -1 0 -2 15. A calcium atom loses 2 electrons. This ion would now carry what overall charge? +2 -1 0 -2 16. Sort the characteristics into the correct column. Hydrogen bonding not a true bond attraction between molecules, not atoms formed when the positively charged end of one molecule interacts with the negative end of another molecule weak and easily broken Covalent bonding between atoms, not molecules true bond formed when atoms share electrons strong and not easily broken 17. Do you want to receive the last 20 points on this activity? yes!