P.1.2

Which best explains why the alkali metals are the most reactive group in the periodic table?

• They are radioactive.

• They have complete outer energy levels.

• They have the highest atomic masses of any elements.

• They have only one electron in their outer energy level.

In which part of the periodic table are the most reactive nonmetals located?

• entire row at the top end of the table

• the rows at the bottom of the table that connect two sections

• the column at the far left of the table

• the second column from the right of the table

Which best explains how elements are arranged on the modern periodic table?

• Elements are arranged from fewest protons to most protons.

• Elements are arranged from most protons to fewest protons.

• Elements are arranged from fewest neutrons to most neutrons.

Which elements are most likely to react in the same manner in a chemical reaction?

• elements in the same group

• elements in the same period

• elements with similar atomic masses

List the steps of the scientific method

d

e

f

c

b

a

Form a hypothesis

Ask a question

Conduct experiment

Communicate results

Draw conclusions

Analyze results

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

Which best explains how the periodic table is used to identify properties of elements?

• by the color and shape of the elements

• by the number of electrons in the elements

• by the group in which the elements are located

Properties such as magnetism, luster, and malleability have been used to group together which category of elements on the periodic table?

• metals

• nonmetals

• metalloids

• noble gases

What physical property is a characteristic of all the elements of the group located in the rightmost column of the periodic table?

• a very high melting point

• a gaseous state at room temperature

• a good electric current conductor

• an extremely brittle solid at room temperature

Which of these is one similarity of the elements in the first group of the periodic table?

• The elements in the group have similar atomic masses.

• The elements in the group have the same number of electrons.

• The elements in the group are very unreactive metals.

• The elements in the group react with oxygen in similar ways.