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Science > Elements, Compounds And Mixtures > Flashcards

Elements, Compounds And Mixtures Flashcards

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1
Q

What are the 6-10 elements

A
  1. Carbon
  2. Nitrogen
  3. Oxygen
  4. Fluorine
  5. Neon
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2
Q

What are the 11-15 elements

A
  1. Sodium
  2. Magnesium
  3. Aluminium
  4. Silicon
  5. Phosphorus
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3
Q

What are the 16-20 elements

A
  1. Sulfur
  2. Chlorine
  3. Argon
  4. Potassium
  5. Calcium
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4
Q

What is the symbol for hydrogen

A

H

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5
Q

What is the symbol for helium

A

He

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6
Q

What is the symbol for lithium

A

Li

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7
Q

What is the symbol for beryllium

A

Be

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8
Q

What is the symbol for boron

A

B

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9
Q

What is the symbol for carbon

A

C

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10
Q

What is the symbol for nitrogen

A

N

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11
Q

What is the symbol for oxygen

A

O

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12
Q

What is the symbol for fluorine

A

F

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13
Q

What is the symbol for neon

A

Ne

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14
Q

What is the symbol for sodium

A

Na

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15
Q

What is the symbol for magnesium

A

Mg

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16
Q

What is the symbol for aluminium

A

Al

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17
Q

What is the symbol for silicon

A

Si

18
Q

What is the symbol for phosphorus

A

P

19
Q

What is the symbol for Sulfur

A

S

20
Q

What is the symbol for chlorine

A

Cl

21
Q

What is the symbol for Argon

A

Ar

22
Q

What is the symbol for potassium

A

K

23
Q

What is the symbol for calcium

A

Ca

24
Q

How many naturally occurring elements are there

A

92

25
Q

List 2 examples of compounds

A

Water= hydrogen + oxygen

Table salt= sodium + chlorine

26
Q

What is an element

A

A pure substances made up of one kind of atom

27
Q

What is an atom

A

An atom is made up of 3 sub atomic particles, protons, neutrons and electrons

28
Q

What does an electron do

A

Electrons orbit the nucleus which is located at the centre of the atom and houses the protons and neutrons

29
Q

What charge do protons have

A

Positive

30
Q

What charge does electrons have

A

Negative

31
Q

What charge does neutrons have

A

Neutral

32
Q

What is the atomic number related to

A

The number of protons = the atomic number

33
Q

How can u find the number of neutrons

A

Mass number- atomic number = number of neutrons

34
Q

How can u find the mass number

A

The sum of protons and neutrons

35
Q

How many electrons can each electron shell hold

A

1- a max of 2
2- a max of 8
3- a max of 8

36
Q

What 2 elements have electrons in the 4th shell

A

Potassium and calcium

37
Q

Describe a compound

A

More than one element makes a compound. In compounds the atoms of one element are bonded very tightly

38
Q

Describe a mixture

A

Mixtures can be made up of 2 or more elements or compounds. The substances that make up mixtures can be usually be easily separated

39
Q

When creating a compound what are the 2 elements called

A

They are called reactants and they produce a product

40
Q

What are the first five elements.

A
  1. Hydrogen
  2. Helium
  3. Lithium
  4. Beryllium
  5. Boron

Science (17 decks)

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