9.30.W - Lesson Review: PT: Metalloids & Halogens / PT: Nonmetals & Noble Gases / Want to Know More About the Elements?

Question 1

The period that an element is in tells the number of ________ shells normally possessed by an atom.
neutron
electron
proton
atom

Answer 1

electron

Question 2

What can you conclude about the classification of boron?
that boron is a metalloid and has properties of both metals and nonmetals—it appears dull but is ductile and forms both basic and acidic oxides
that boron is a noble gas and has a full valence electron shell, is chemically nonreactive, is colorless, is odorless, and has a high boiling point
that boron is a noble gas and has a full valence electron shell, is chemically nonreactive, is colorless, is odorless, and has a low boiling point
that boron is a nonmetal and is dull and brittle, is a poor conductor of heat and electricity, forms acidic oxides, and forms anions in aqueous solutions

Answer 2

that boron is a metalloid and has properties of both metals and nonmetals—it appears dull but is ductile and forms both basic and acidic oxides

Question 3

Which element makes up 25% of the earth’s crust and is used in solar cells, tools, cement, and grease?
antimony
polonium
boron
arsenic
tellurium
germanium
silicon

Answer 3

silicon

Question 4

What can you conclude about the classification of silicon?
that silicon is a metalloid and has properties of both metals and nonmetals—it appears lustrous but is brittle and a poor conductor of heat and electricity
that silicon is a metal and is shiny, malleable, and ductile, conducts heat and electricity, forms basic oxides, and forms cations in aqueous solutions
that silicon is a noble gas and has a full valence electron shell, is chemically nonreactive, is colorless, is odorless, and is a gas at room temperature
that silicon is a nonmetal and is dull, is brittle, is a poor conductor of heat and electricity, forms acidic oxides, and forms anions in aqueous solutions

Answer 4

that silicon is a metalloid and has properties of both metals and nonmetals—it appears lustrous but is brittle and a poor conductor of heat and electricity

Question 5

The element silicon is a hard and brittle crystalline solid with a blue-gray metallic luster. Silicon is used as a semiconductor. Based on these properties as well as the location in the periodic table, we would classify silicon as a __________.

rare earth element
metal
nonmetal
metalloid

Answer 5

metalloid

Question 6

Halogens are _______ conductors and have __________ melting and boiling points.
poor; high
good; high
good; low
poor; low

Answer 6

poor; low

Question 7

What is the element that is a part of the nonmetals classification but is not organized to be around it in the periodic table?
oxygen
neon
boron
helium
sulfur
hydrogen

Answer 7

hydrogen

Question 8

Hydrogen is an example of a _______________.
metalloid
noble gas
nonmetal
metal

Answer 8

nonmetal

Question 9

Neon is an example of a _______________.
noble gas
nonmetal
metal
metalloid

Answer 9

noble gas

Question 10

Which of the following make up most of the earth and its organisms?
alkali metals
metalloids
nonmetals
metals
halogens
noble gases

Answer 10

nonmetals

Question 11

All of the noble gases have ____________ electrons in their outer shell.

Answer 11

eight

Question 12

What can you conclude about the classification of krypton?

that krypton is a metalloid and has half-full core and valence electron shells, is chemically nonreactive, and is located in Group 10
that krypton is a noble gas and has a full valence electron shell, is chemically nonreactive, and is located in Group 18
that krypton is a nonmetal and has a nearly full valence electron shell, is chemically reactive, and is located by Group 18
that krypton is a metal and has full core electron shells, is highly chemically reactive, and is located on the right

Answer 12

that krypton is a noble gas and has a full valence electron shell, is chemically nonreactive, and is located in Group 18

Question 13

Ferrous metals contain an important element from which the Latin word for ferrous comes from. This element is _______.
gold
iron
boron
tin
silver
fluorine
phosphorus

Answer 13

iron

Question 14

_______ is essential for building amino acids.
Hydrogen
Carbon
Phosphorus
Oxygen
Nitrogen
Calcium

Answer 14

Nitrogen

Question 15

___________ is essential to respiration, which is the process that gives your cells energy.
Carbon dioxide
Argon
Oxygen
Helium
Fluorine
Hydrogen

Answer 15

Oxygen

Question 16

___________ strengthens teeth and bones.
Silicon
Phosphorus
Magnesium
Potassium
Manganese
Calcium

Answer 16

Calcium

Question 17

The necessary element that forms part of the structure of DNA and RNA is ___________.
nitrogen
hydrogen
chlorine
sodium
carbon
phosphorus

Answer 17

phosphorus

Question 18

What is an optional element that can be placed in tires (besides oxygen) that offers some benefits, such as the tires lasting longer?
krypton
argon
helium
nitrogen
neon
carbon
xenon

Answer 18

nitrogen

Question 19

Match each of the following elements with its best description:

strengthens teeth and bones

calcium
nitrogen
oxygen
phosphorus

Answer 19

calcium

Question 20

Match each of the following elements with its best description:

is essential to building amino acids

calcium
nitrogen
oxygen
phosphorus

Answer 20

nitrogen

Question 21

Match each of the following elements with its best description:

is essential to respiration, which is the process that gives your cells energy

calcium
nitrogen
oxygen
phosphorus

Answer 21

oxygen

Question 22

Match each of the following elements with its best description:

forms part of the structure of DNA and RNA

calcium
nitrogen
oxygen
phosphorus

Answer 22

phosphorus

Question 23

Name and describe a characteristic of halogen elements in the periodic table. Please respond in 1–2 complete sentences using your best grammar.

Answer 23

Your Answer:
These Halogens are named Fluorine, chlorine, Bromine, Iodine, Astatine, and tennessine. They all have seven valence electrons, and this makes them highly reactive. They also make very poor conductors.

Question 24

Name and describe a characteristic of nonmetal elements in the periodic table. Please respond in 1–2 complete sentences using your best grammar.

Answer 24

Your Answer:
The names of the nonmetals include carbon, nitrogen, oxygen, phosphorus, sulfur, and selenium. Most of these nonmetals don’t conduct electricity. Some nonmetals are reactive, and some are gases.