Name or give formulas for the following compounds. a) Na_(2)SO_(4) __ b) Strontium Oxide __ c) AuCl __ d) Iron (II) Chromate __ e) Carbon Tetrachloride __ f) C_(2)O_(7) __ g) Cu(NO_(3))_(2) __ h) (NH_(4))_(2)CO_(3) __

48. What charge would an oxygen atom with 10 electrons have?

2. Give three examples of synthetic products made from plants or animals.

Which of the following is an isomer of $H-\underset {H}{H}-C\equiv C-\underset {H}{H}-\underset {H}{H}-H$ 2-pentene 1-pentyne pentane

2) What charges would Aluminum, chlorine and calcium ions have?

45) Explain the differences between an ionic bond and a covalent bond. 46) What is the difference between a polar covalent and nonpolar covalent bond? 47) How can you determine whether a bond is ionic or covalent? 48) Classify these bonds as ionic bonds or covalent bonds: a. Br-br b. N-O c. K-Br d. $Mg-S$ 49) Explain the main characteristic of a metallic bond.

Explain why ionization energy decreases as you move down a group. Atomic radius decreases Electrons are added to the same energy level Nuclear charge decreases Outer electrons are farther from the nucleus and more shielded

The strength of the dipole-dipole interactions __ with the number of electrons in a molecule. a Increases b Decreases C Remains constant d First increases and then decreases

Changing from one element to another is called transmutation isotopic change radioactivity

d. What volume of 5:00 M Kl stock solution is needed to make 250. mL of a 1.50 M solution? 833 mL 0.030 oml 33.3 mL 75.0 mL

16. What happens to electrons in: a. An ionic bond: b. A covalent bond: