Question 1

If an element is dull in appearance, brittle, and a good insulator. What category would it belong in?

Accepted Answer

Nonmetal

Answer

Rare Earth Element

Answer

Metalloid

Answer

Metal

Question 2

If an element is shiny, ductile, malleable, and can conduct electricity, what category would it belong in?

Accepted Answer

Metal

Answer

Nonmetal

Answer

Rare Earth Element

Answer

Metalloid

Question 3

What are two properties that make a metal a good choice to use as a wire in electronics?

Accepted Answer

ductility, conductivity

Answer

luster, malleability

Answer

high melting point, luster

Answer

conductivity, malleability

Question 4

Antimony is an element on the periodic table. It has the following characteristics. Solid, conducts electricity under certain circumstances, looks shiny, and breaks when hit with a hammer. What category would Antimony belong in?

Accepted Answer

Metalloid

Answer

Metal

Answer

Nonmetal

Question 5

Elements that share common characteristics are grouped

together on the periodic table. In which part of the table

would you MOST LIKELY find an element that is a gas at

room temperature?

Accepted Answer

The right side of the table

Answer

The zigzag line toward the right on the table

Answer

The two rows shown separately below the table

Answer

The left side of the table

Question 6

Rare earth elements are shown on two lines below the periodic table.

Does this location indicate that rare earth elements have different

properties than metals?

Accepted Answer

A No. Rare earth elements are metals that are placed there to make the

table easier to read.

Answer

B No. Rare earth elements are nonmetals that are placed there to

separate them from the metals.

Answer

Yes. Rare earth elements are metalloid elements that are not metals or

Question 7

The periodic table organizes elements based on their properties.

Which statement BEST describes a pattern shown by the periodic table?

Accepted Answer

Elements in a column of the table have similar chemical properties.

Answer

Elements in a column of the table have the same chemical and physical

properties

Answer

Elements in a row of the table have similar chemical properties.

Answer

Properties cannot be predicted by the position of the element on the

Table.

Question 8

A physical property is a characteristic of matter that can be

observed or measured without changing the identity of the

matter.

Why is iron’s tendency to rust NOT a physical property?

Accepted Answer

It is not a physical property because a new substance

with new properties forms when iron rusts

Answer

It is not a physical property because iron is magnetic.

Answer

It is not a physical property because the identity of iron

remains unchanged when it rusts.

Answer

It is not a physical property because the change cannot

be observed.

Question 9

A scientist decided to use hydrochloric acid to test a piece of

metal to find evidence that it was the element zinc, which

undergoes a chemical reaction with hydrochloric acid.

What evidence would indicate to a scientist that a chemical

reaction had NOT LIKELY occurred?

Accepted Answer

No visible change to the solution

Answer

Decrease in the mass of the solution

Answer

Change in the temperature of the solution

Answer

Bubbling of the solution

Question 10

When 5 g of solid zinc is placed into a beaker that holds 15 g

of a hydrochloric acid solution, bubbles of hydrogen form.

The mass of the contents of the beaker after the reaction is

less than 20 g.

Which statement BEST explains the difference in mass?

Accepted Answer

The lower mass is a result of the hydrogen gas leaving the beaker

Answer

It is expected because some atoms are used up in each

chemical reaction.

Answer

The solid zinc reacted, so some of its mass was lost

during the reaction.

Answer

The solid zinc did not react completely, so not all of the

atoms of reactants could become part of the products.

Question 11

The two types of change to matter are physical changes and chemical

changes.

Which of these statements correctly describes a change to a substance?

Accepted Answer

Rusting of iron is a chemical change because the iron oxide that is

formed is a new substance.

Answer

Boiling water is a physical change because forming bubbles is always

evidence of a physical change.

Answer

Freezing water is a chemical change because the ice formed is a new

substance.

Answer

Coloring a piece of paper with a crayon is a chemical change because

a color change is always evidence of a chemical change.

Question 12

Metalloids would MOST LIKELY be used to make

semiconductor components?

Accepted Answer

true

Answer

false

Question 13

Samarium is an element on the periodic table that is silvery and can be used to produce strong permanent magnets. What category would Samarium MOST LIKELY be classified as?

Accepted Answer

Rare Earth Element

Answer

Metalloid

Answer

Metal

Answer

Nonmetal

Question 14

This illustration shows a part of the Periodic Table.

Which pair of elements is MOST LIKELY to have similar properties?

Accepted Answer

C and Ge

Answer

A B and C

B C and Ge

C Ge and As

D Ga and N

Answer

Ga and N

Answer

Ge and As

Question 15

This table shows some of the properties of four elements. Based on these properties, which element is classified as a metalloid?

Accepted Answer

Antimony

Answer

Selenium

Answer

Aluminum

Answer

Xenon

Question 16

Students in a science lab observed changes to different

materials and recorded their observations in the table. Then

they decided whether the change was a physical change or

a chemical change.

Which statement BEST describes which conclusion was NOT

correct and why?

Accepted Answer

Dissolving sugar; the original materials can be

recovered unchanged.

Answer

Burning a match; all the atoms of the original wood still

exist.

Answer

Mixing salt and sugar; the materials cannot be separated

once they are mixed.

Answer

Cutting paper; the strips cannot be put together to make

the original sheet.

Question 17

A student mixed two colorless solutions together and

recorded the observations shown in the table.

What conclusion can the student MOST LIKELY make based

on these observations?

Accepted Answer

There could have been a chemical change because the

color changed when the solutions mixed.

Answer

There was a physical change because most of the

observations were the same.

Answer

There was no chemical change because the

temperature did not change.

Answer

There was no evidence of any physical or chemical

change.

Question 18

This image shows a burning candle.

Which of these is NOT evidence that burning is a chemical change?

Accepted Answer

Wax dripping down the side of the candle

Answer

Change in the mass of the candle

Answer

Heat produced by the flame

Answer

Wick changing color from white to black

Question 19

A group of students performed several experiments to determine the

identity of an unknown substance based on its properties. They recorded

their results in the table.

During which experiment was there a chemical change to the substance?

Accepted Answer

Experiment 2

Answer

Experiment 3

Answer

Experiment 4

Answer

Experiment 1

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