Unit 2 - Periodic trends

Question 1

What is coulombic attraction?

Answer 1

The attraction between oppositely charged particles (protons and electrons)

Question 2

What happens as the distance between electrons and protons is increased?

Answer 2

The force of attraction decreases

Question 3

What happens as the number of protons increases?

Answer 3

The force of attraction increases

Question 4

The more protons, the greater the-

Answer 4

attraction

Question 5

Does the distance from the nucleus determine the attractive force between the outermost electrons and the nucleus?

Answer 5

yes

Question 6

What are metals?

Answer 6

Elements that are shiny and good conductors of heat and electric current

Question 7

What 2 qualities do metals have?

Answer 7

They are malleable and ductile.

Question 8

What does malleable mean?

Answer 8

Can be hammered into thin sheets

Question 9

What does ductile mean?

Answer 9

They can be drawn into thin wires

Question 10

What are nonmetals?

Answer 10

Elements that are dull (not shiny) and are poor conductors of heat and electric current.

Question 11

Are solids malleable and ductile?

Answer 11

no

Question 12

What are metalloids?

Answer 12

They are also called semiconductors. They have properties of both metals and nonmetals.

Question 13

What are the properties of metals?

Answer 13

Ductile, malleable, lustrous, conduct electricity, form cations

Question 14

What are properties of nonmetals?

Answer 14

Brittle, dull, don’t conduct, form anions

Question 15

What properties do metalloids have?

Answer 15

Properties of both metals and nonmetals!

Question 16

Elements in the period table are shown with their states at ______ ____________.

Answer 16

room temperature

Question 17

What are diatomic molecules?

Answer 17

Elements that are always found as a pair.

Question 18

How many diatomic molecules exist?

Answer 18

7

Question 19

What are the columns on the periodic table called?

Answer 19

Families/Groups

Question 20

How are elements organized into families?

Answer 20

Based on the number of valence electrons they have.

Question 21

How many valence electrons to Alkali metals have?

Answer 21

Only 1

Question 22

Are noble gases reactive? What is a nickname for them?

Answer 22

No, they aren’t reactive. That’s why they are said to be “inert”.