Question 1

Which of the following are poor conductors of heat and electricity?

Accepted Answer

nonmetals

Answer

metallods

Answer

alkaline Earth metals

Answer

metals

Question 2

Which group on the periodic table is known as the alkaline earth metals?

Accepted Answer

group 2A

Answer

group 7A

Answer

group 8A

Answer

group 1A

Question 3

Halogens are good disinfectants. Which of the following is a disinfectant?

Accepted Answer

Cl

Answer

N

Answer

Fe

Answer

O

Question 4

Why do atomic numbers jump by 15 from left to right in the section of the periodic table shown?

Accepted Answer

the missing elements form the lanthanide and actinide series, usually found below the periodic table

Answer

the missing elements are all radioactive

Answer

the missing elements have not yet been discovered

Answer

the missing elements do not exist

Question 5

Looking at only the box below, what can you say for certain about the element immediately to the right of oxygen on the periodic table?

Accepted Answer

the element will have atomic number 9

Answer

the element is a gas

Answer

the elements atomic weight will be 18

Answer

the elements name will begin with the letter P

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