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Ns Flashcards

1
Q

Define melt

A

Substance from solid to liquid

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2
Q

Define melting point

A

A temperature at which a substance changes from solid to liquid

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3
Q

Boil

A

When a liquid starts to bubble and change into gas

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4
Q

What is an element

A

A pure substance which cannot be broken down

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5
Q

The rows on a period table are called

A

Periods

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6
Q

How are the elements represented

A

Number,symbol,atomic number and position

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7
Q

What is a fair test

A

A scientific investigation that is carefully controlled

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8
Q

What does a scientist always start with

A

Question

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9
Q

Define constant

A

Things we don’t change

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10
Q

Define variables

A

Things we change

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11
Q

Why do we change one variable at a time

A

To get an accurate result

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12
Q

4 ways plastic is useful

A

Strong
Replace ivory/wood
It makes cars lighter
It saves a lot of energy

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13
Q

Give the function for ovaries

A

Produce and release eggs

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14
Q

Function of anther

A

Produce pollen grains

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15
Q

Function of stigma

A

Receives pollen

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16
Q

Solvent?

A

The liquid which the substance dissolves in

17
Q

Solute?

A

The substance that dissolve in the liquid

18
Q

Solution

A

The mixture that the substance and liquid have been mixed in

19
Q

Two types of mixtures

A

Heterogeneous and homogeneous

20
Q

Fish have moist skin covered in

A

Scales

21
Q

Fish have a skeleton made of bone or of

A

Cartilage

22
Q

Fish use for swimming

A

Fins

23
Q

To reproduce, fish lay that have no .

A

Eggs, shells

24
Q

Fish are which means their body temperature changes with the temperature of the environment

A

Cold blooded

25
Q

Name the hormon that changes in girls

A

Oestrogen

26
Q

Name the hormone that causes changes in boys

A

Testoterone

27
Q

Difference between gynnosperm and angispern

A

The seed of gynnosperm form in cones instead of flowers

Ns (1 decks)

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