Chapter 5 Electricity

Question 0

Objects charged by rubbing have a ________ electric charge

Answer 0

Static

Question 1

True or False. The ancient Greeks knew about static electricity

Answer 1

True

Question 2

Thales was a Greek scientist who discovered static electricity ______ years ago

Answer 2

2500

Question 3

Benjamin Franklin proved ________ was a big static electric charge

Answer 3

Lightning

Question 4

He discovered static electricity discharge caused the muscles of a dead frog to twitch

Answer 4

Lungi Galvani

Question 5

Someone who reacts quickly like being shocked by electricity is said to be

Answer 5

Galvanized

Question 6

Sheets of iron coated with zinc to keep them from rusting are called

Answer 6

Galvanized iron

Question 7

He built the first battery

Answer 7

Alessandro Volta

Question 8

Volta built his battery using cardboard soaked with saltwater and what two kinds of metal

Answer 8

Zinc and copper

Question 9

Voltas battery produced continuous current flow. True or false

Answer 9

True

Question 10

Electrons at rest cause ________ electricity

Answer 10

Static

Question 11

Electrons in motion are called _____ electricity

Answer 11

Current

Question 12

He was very careless chemist who used unsafe procedures when conducting experiments and tasted and sniffed new chemicals

Answer 12

Humphrey Davy

Question 13

Davy discovered a process using electricity to separate oxygen from compounds. It is called

Answer 13

Electrolysis

Question 14

Davy used electrolysis to discover barium, strontium, calcium and _______

Answer 14

magnesium

Question 15

Who discovered the safety lamp

Answer 15

Humphry Davy

Question 16

The safety lamp protected miners. It’s flame was protected by a

Answer 16

Metal screen

Question 17

Davy’s discovered the bright arc light that had electricity jump across two _____ electrodes to generate light

Answer 17

Carbon

Question 18

Alkali means

Answer 18

From the ash

Question 19

True or false. Members of the sodium family are non metals

Answer 19

False

Question 20

Sodium family metals have a silvery luster and conduct

Answer 20

Electricity and heat

Question 21

True or false. Sodium metals can be cut with a knife

Answer 21

True

Question 22

True or false. Sodium metals melt at low temperatures and can be drawn out into long wires and hammered into sheets

Answer 22

True

Question 23

Members of of the sodium family are extremely ACTIVE or INACTIVE chemically

Answer 23

Active

Question 24

True or false. Sodium metals burn your skin by stripping oxygen from it

Answer 24

True

Question 25

Sodium is used to make what

Answer 25

Soap, baking soda, salt and window glass

Question 26

True or false. Potassium can burn water

Answer 26

True

Question 27

Fires caused by sodium family should be put out with

Answer 27

Dry sand, salt or soda ash

Question 28

Lithium is the heaviest or lightest metal in the sodium family

Answer 28

Lightest

Question 29

Lithium batteries are found in

Answer 29

Cameras and calculators

Question 30

True or false. Sodium family metals give off colors when they burn

Answer 30

True

Question 31

Why did Robert Wood sprinkle lithium chloride on his dinner meat

Answer 31

To prove the cook was using leftover food