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Science > chemistry-Atoms, molecules, elements, compounds > Flashcards

chemistry-Atoms, molecules, elements, compounds Flashcards

1
Q

What is an Atom

A

A single particle made from protons, neutrons and electrons

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2
Q

what is a molecule

A

2 or more atoms combined together

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3
Q

what is an element

A

a chemical made up of only 1 type of atom

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4
Q

what is a compound

A

a molecule that contains more than 1 type of atom

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5
Q

what is pure

A

when it only contains one chemical

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6
Q

what are mixtures

A

different chemicals, that are not combined

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7
Q

what is a formula

A

combination of symbols that represents the chemical composition substance

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8
Q

on the periodic table what is hydrogen

A

H

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9
Q

on the periodic table what is carbon

A

C

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10
Q

on the periodic table what is nitrogen

A

N

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11
Q

on the periodic table what is

A

oxygen

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12
Q

on the periodic table what is sodium

A

Na

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13
Q

on the periodic table what is magnesium

A

Mg

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14
Q

on the periodic table what is Sulphur

A

S

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15
Q

on the periodic table what is chlorine

A

Cl

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16
Q

on the periodic table what is gold

A

Au

17
Q

on the periodic table what is sodium chloride

A

NaCl

18
Q

on the periodic table what is magnesium oxide

A

MgO

19
Q

on the periodic table what is water

A

H2O

20
Q

on the periodic table what is carbon dioxide

A

CO2

21
Q

on the periodic table what is a hydrogen molecule

A

H2

22
Q

on the periodic table what is a oxygen molecule

A

O2

23
Q

what is a chemical reaction

A

when new products are made

24
Q

what are reactants

A

chemicals that react together in a chemical reaction

25
Q

what is a product

A

The chemicals that are made during a chemical reaction

26
Q

how can you identify a metal

A

shiny, conductor, basic oxides

27
Q

how can you identify a non-metal

A

dull, insulator, acidic oxides

28
Q

what is a conductor

A

allows electricity/heat to pass through

29
Q

what is n insulator

A

doesn’t allow electricity/heat to pass through

30
Q

carbon dioxide

A

why all rain is slightly acidic

31
Q

sulphur oxide

A

gas is responsible for ACID rain

32
Q

LAW OF CONSERVATION OF MASS

A

NO ATOMS ARE LOST OR GAINED IN A CHEMICAL REACTION THEREFORE; THE REACTANTS ALWAYS EQUALS THE MASS OF PRODUCTS

Science (3 decks)

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