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Grade 6 Science > Unit 2 > Flashcards

Unit 2 Flashcards

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Biology 101 flashcards
1
Q

a pure substance made from a single type of atom

A

element

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2
Q

a group of two or more atoms held together by chemical bonds

A

molecule

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3
Q

a substance in which the atoms of two or more elements are bonded together

A

compound

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4
Q

Name of element
H

A

hydrogen

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5
Q

Name of element
HE

A

helium

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6
Q

Name of element
Li

A

lithium

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7
Q

Name of element
Be

A

beryllium

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8
Q

Name of element
B

A

boron

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9
Q

Name of element
C

A

carbon

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10
Q

Name of element
N

A

nitrogen

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11
Q

Name of element
O

A

oxygen

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12
Q

Which is a compound? A water molecule or an oxygen molecule

A

a water molecule

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13
Q

True or False

Helium is an inert gas

A

true

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14
Q

True or False

Hydrogen is a metal.

A

false

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15
Q

True or False

Hydrogen is a flammable gas.

A

true

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16
Q

New chemical compounds are formed in a chemical reaction.

A

true

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17
Q

Name of element
F

A

fluorine

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18
Q

Name of element
Ne

A

neon

19
Q

Name of element
Na

A

sodium

20
Q

Name of element
Mg

A

magnesium

21
Q

Name of element
Al

A

aluminium

22
Q

Name of element
Si

A

silicon

23
Q

Name of element
P

A

phosphoruous

24
Q

Name of element
S

A

sulphur

25
Q

property of element
Metal that is resistant to corrosion
a————m

A

aluminum

26
Q

property of element
black solid

A

carbon
(boron is black/brown)

27
Q

property of element
flammable metal
m——

A

magnesium

28
Q

True or false
All chemical reactions need heat to make them take place.

A

false

29
Q

True or false
Heat can cause chemical reaction

A

true

30
Q

True or false
Rusting is an example of a chemical reaction

A

false

31
Q

A substance that neutrolised an acid

A

base

32
Q

A substance produced by the reaction between an acid and a metal or a base.

A

salt

33
Q

A chemical that reacts with metals and bases to produce salts.

A

acid

34
Q

A substance that changes colour to show if a solution is acid or alkaline.

A

indicator
(e.g. limus paper)

35
Q

A base that dissolves in water.

A

alkali

36
Q

Acid or alkali
turns red limus blue

A

alkali

37
Q

Acid or alkali
pH less than 7

A

acid

37
Q

Acid or alkali
pH less than 7

A

acid

38
Q

Acid or alkali
turns blue litmus red

A

acid

39
Q

Acid or alkali
pH greater than 7

A

alkali

40
Q

Use of acids and alkalis
magnesium hydroxide

A

treating indigestion

41
Q

Use of acids and alkalis
sulphuric acid

A

electrolyte in car batteries

42
Q

Use of acids and alkalis
nitric acid

A

making fertilisers

43
Q

Use of acids and alkalis
sodium hydroxide

A

clearning and soap

Grade 6 Science (3 decks)

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