Chpt 3

Which of the following atoms has the LARGEST atomic radius? Calcium Magnesium Oxygen Krypton

Calcium

List the elements in order of increasing ionization energy: Na, K, Cs K, Na, Cs Na, K, Cs Cs, Na, K Cs, K, Na

Cs, K, Na

Which of the following statements are TRUE? Choose all that apply. Electrons repel each other. A proton and an electron have opposite charges. A proton is attracted to a neutron due to their electrical charges. The nucleus contains most of the mass of an atom.

Electrons repel each other. A proton and an electron have opposite charges. The nucleus contains most of the mass of an atom.

Which of the following elemental name/symbols pairs is WRONG? Potassium, K Iron, Ir Sodium, Na Copper, Cu Carbon, C

Iron, Ir

Which of the following elements has 2 valence electrons? Carbon Sulfur Magnesium Lithium

Magnesium

Place the following elements in order of DECREASING atomic radius: Cl, N, P N, Cl, P Cl, N, P P, Cl, N Cl, P, N

P, Cl, N

Which of the following elements are METALS? Choose all that apply. Zinc Aluminum Hydrogen Phosphorous

Zinc Aluminum

8. Identify the group or period number described by each of the following: a. contains Na, K, and Rb b. the row that begins with Li c. the noble gases d. contains F, Cl, Br, and I

a. 1 b. 2 c. 18 d. 17

12. Give the symbol of the element described by each of the following: a. an alkaline earth metal in Period 2 b. Group 5A (15), Period 3 c. a noble gas in Period 4 d. a halogen in Period 5 e. Group 4A (14), Period 4

a. Beryllium, Magnesium, Calcium, Strontium, Barium, Radium b. None? c. Argon, Ar d. Iodine, I e. Titanium Ti

16. Identify each of the following as describing either a proton, neutron, or electron: a. has a mass about the same as a proton b. is found in the nucleus c. is attracted to the protons d. has a -1 charge

a. Electron b. atoms c. Electrons d. Electrons

4. Write the name of the element for each symbol. a. He b. P c. Na d. As e. Ca f. Br g. Cd h. Si

a. Helium b. Phosphorus c. Sodium d.Arsenic e. Calcium f. Bromine g. Cadmium h. Silicon

6. What elements are in the following substances? a. water, H2O b. baking soda, NaHCO3 c. lye, NaOH d. sugar, C12H22O11

a. Hydrogen and oxygen b. Sodium, Hydrogen, Carbon and Oxygen c. Sodium, Oxygen, Hydrogen d. Carbon, Oxygen, Hydrogen

14. Is each of the following elements a metal, nonmetal of metalloid? a. located in Group 2A (2) b. a good conductor of electricity c. chlorine d. arsenic e. an element that is not shiny f. oxygen g. nitrogen h. tin

a. Metal b. Metals c. Nonmetal d. Metalloids e. Nonmetal f. Nonmetal g. Nonmetal h. Metal

2. Write the symbols for the following elements: a. oxygen b.lithium c.uranium d. titanium e. hydrogen f. chromium g. titanium h. gold

a. O b. Li c. U d. Ti e. H f. Cr g. Sn h. Au

Fill in the blank: Electrons can move to a higher energy level when they __________ light. absorb emit

absorb