Practice Questions For Review

Practice Questions For Review

1. pH: an expression of the acidic or basic character of a solution: at 25 ^oC, solutions with pH values lower than 7 are acidic, solutions above 7 are basic, and neutral solutions equal 7; pH is based on a solution's hydrogen ion (H^- or H₃O⁺ ) concentration. 1 vinegar acid, 7 water, 9 ammonia base pg. 70
2. 100 km/hr : 100,000m/360,000,000s
3. 905 mg: King Henry died unusually drinking chocolate milk .000905 kg
4. Electrons: a particle possessing a negative electrical charge; electrons surrounding the nuclei of atoms. Barely weighs anything. Protons: a particle possessing a positive electrical charge that is found in the nuclei of all atoms; the total protons in an element's atom equal its atomic number. Weighs the same as a neutron. Neutrons: a particle without electrical charge; found in the nucleus of an atom. Weighs the same as a proton.
5. Cation is positively charged. Anion is negatively charged. Loosing or gaining an electron.
6. The first column of the tends to lose one electron and have a positive charge. (Na, K, Rb)
7. The second column of the periodic table tends to lose 2 electrons and have a positive charge. ( Mg, Ca, Sr)
8. The sixth column of the periodic table tends to gain 2 electrons and have a negative charge. (O, S, Se).
9. The seventh column of the periodic table tends to gain 1 electrons and have a negative charge. ( F, Cl, Br.)
10. The eighth column of the periodic table tends to not loose or gain any electrons and has a neutral charge. Noble gases. ( He, Ne, Ar).
11. Negative ions: Cl, O; Positive ions: H, K
12. Atom : composed of electrons, protons, and neutrons
13. There is always dissolved minerals and gasses 
14. Heating the water, under pressure
15. K⁺ + I^-= KI        Ba²⁺ + OH^_ = Ba (OH)₂           Al³⁺ +O² = Al₂O₃
16. Cd, 80 atomic number, 200 atomic weight, 120 neutrons, 80 protons, 80 electrons
17. Unsaturated solution is a solution that contains less dissolved solute than the amount the solvent can hold at a specific temperature while a saturated solution has as much dissolved solute that it can hold at a specific temperature.
18. While the water is heated keep adding salt, and then cool it
19. Define the following terms.
20. Chroline and ozone are added to kill bacteria. 
21. MgCl_2: Magnesium has +2 charge so Cl- needs 2. 
22. Ph
23. H: 1
    Mg: 12
    Na: 11
    Cl: 17
24. The temperature was not high enough. It was saturated. Not enough pressure.
25. If a solution exhibits the Tyndall effect what kind of solution is it.