Valence electrons Energy levels Metal, nonmetal, and metalloids Phases of matter Review

Question How many valence electrons does Barium (Ba) have?

Answer 1 – 10 2

Question How many valence electrons does Antimony (Sb) have?

Answer 1 – 20 5

Question How many valence electrons does iron (Fe) have?

Answer 1 – 30 variable

Question Which one of the following elements have the most valence electrons: Fr Ni Bi I

Answer 1 – 40 I

Question What are the groups on the periodic table and how do they organize the elements?

Answer 1 – 50 The groups are the vertical rows and organize the elements by valence electrons.

Question How many electron energy levels does sodium (Na) have?

Answer 2 – 10 3

Question How many electron energy levels does germanium (Ge) have?

Answer 2 – 20 4

Question How many electron energy levels does radon (Rn) have?

Answer 2 – 30 6

Question How many electron energy levels does helium (He) have ?

Answer 2 – 40 1

Question What are the periods on the periodic table and how do they organize the elements?

Answer 2 – 50 Periods are the horizontal rows and organize the periods by electron energy levels?

Question Is tin (Sn) a metal, nonmetal, or metalloid?

Answer 3 – 10 metals

Question Is selenium (Se) a metal, nonmetal, or metalloid?

Answer 3 – 20 nonmetal

Question Contrast two physical properties of metals and nonmetals

Answer 3 – 30 Metals Nonmetals Positive ions Negative ions Shiny Dull Malleable Brittle Good conductor Poor conductor

Question Which metalloid is essential for making computer chips?

Answer 3 – 40 Silicon (Si)

Question How do we use the periodic table to determine the phase of matter for the elements?

Answer 3 – 50 Gases are in the gun. Group 18 is the barrel. N, O, and F are the handle. Chlorine is the trigger. H is the ejected casing. Liquids are Br and Hg. Everything else is a solid

Question What phase of matter is nitrogen (N)?

Answer 4 – 10 Gas

Question What phase of matter in lithium (Li)?

Answer 4 – 20 Solid

Question Where are the gases located on the periodic table? Describe the parts?

Answer 4 – 30 Group 18 is the barrel. The handle is N, O, & F The trigger is Cl. H is the ejected casing.

Question 4 – 40 What are the liquids on the periodic table and what memory tricks do we use to remember them?

Answer The liquids are bromine and mercury. Bromine is in front of the trigger and mercury is the only liquid metal.

Question How do we identify the solids on the periodic table?

Answer 4 – 50 Everything that is not a gas or a liquid.

Question An irregular object with a mass of 105 g is placed in a graduated cylinder with a volume of 50 mL. The volume in the cylinder rises to 75 mL. What is the density of the object?

Answer 5 – 10 D = m/V m = 105 g V = 75 mL – 50 mL = 25 mL D =m / V – 105 g / 25 mL = 4.2 g/mL

Question What is the density of a cube with 5 cm sides? The mass of the cube is 750 g.

Answer 5 – 20 D = m / V m = 750 g V = 5 cm x 5 cm x 5 cm = 125 cm 3 D = m / V = 750 g / 125 cm 3 = 6 g/ cm 3

Question The molecules in a sample of matter are separated and moving around independently. What phase of matter is represented?

Answer 5 – 30 Gas

Question What is the boiling / condensation point of the substance represented in the below heating curve?

Answer 5 – °C

Question What is the name and atomic mass of the following atom? Neutrons 8 Protons 6 Electrons 6

Answer 5 – 50 Carbon - 14