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Flashcards in Elements and Periodic Table Deck (36)
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1

What is meant by an element?

A substance with only one type of atom.

2

Approximately how many elements are there?

100

3

Where are all the naturally occuring elements made?

In the stars

4

Where are elements listed?

On the periodic table

5

Name 3 ways in which the periodic table can be split into categories

  1. Metal and non-metals
  2. Solids, liquids and gases
  3. Naturrally occurring and man-made

6

Approx how many elements are naturally occurring?

92

 

Numbers 1 to 92

 

Hydrogen to Uranium

7

Name the 2 liquid elements at room temperature

Bromine

Mercury

8

How many elemnts are gases at roomp temperature?

11

 

(Be able to name 2 of them at least)

9

What is meant by a "group" in the periodic table?

10

What is meant by a "period" in the periodic table?

11

What name is given to the group 1 metals?

12

What name is given to the group 7 elements?

13

What name is given to the group 8 elements?

14

Why are group 1 known as alkali metals?

They produce an alkali when reacted with water

15

Why are group 1 metals stored under oil?

To keep them from reacting with oxygen and /or water

16

Describe the reactivity trend of group 1 metals

17

What's the test for hydrogen?

18

What's the test for oxygen?

19

What are some of the physical properties of the alkali metals?

20

Which gas is produced when alkali metals react with water?

21

What happens to stars near the end of their lives dependent on their size?

22

What is the extra step that a massive star takes in its "death"

It becomes a supernova

23

What is the name of the process by which elements are made in stars?

Nuclear Fusion

24

What happens during Nuclear Fusion?

Nuclei of lighter elements "fuse" together to make heavier elements

25

What conditions are need for Nuclear fusion to happen?

Enormour Pressure

 

Very High Temperatures

26

What are some properties and uses of copper

27

What is a compound?

A substance made up of 2 elements

28

What is "electrolysis"?

The breaking apart of a compound using electricity

29

What kind of power supply is needed for electrolysis?

DC

(Direct Current)

30

Whys do we use graphite electrodes?

  1. Graphite conducts electricity
  2. Graphite is unreactive