Strand 1 Test Notes Flashcards

1
Q

Hazard

A

The danger associated with a particular object/chemical

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2
Q

Risk

A

The chance of something happening

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3
Q

Base or Bunsen burner

A

Prevents the Bunsen from toppling

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4
Q

Collar of Bunsen burner

A

Controls the amount of air allowed into the Bunsen,also responsible for different flame types

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5
Q

Chimney of Bunsen burner

A

Raises the flame to a suitable height

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6
Q

Air hole of the Bunsen burner

A

Allows air to enter the bunsen

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7
Q

Variable

A

Something that you change or changes in a experiment

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8
Q

Categoric data

A

Described by a label

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9
Q

Discrete data

A

A while number

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10
Q

Ordered data

A

Data can be put into order but not given an actual number

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11
Q

Continuous data

A

Could have any number

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12
Q

Meaning of astronomy

A

The study of objects beyond the earths atmosphere

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13
Q

What is the force of gravity

A

An active force which affects anything with mass

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14
Q

Meaning of mass

A

The amount of matter an object contains

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15
Q

Meaning of weight

A

The force of gravity acting on an object

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16
Q

Gravitational field strength

A

-earth exerts a force of 10N on each mass of 1KG

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17
Q

Gravitational field strength on earth

A

10N/kg

18
Q

What is the moons gravitational field strength

A

1/6 of earths gravitational field strength

19
Q

How can stars be seen

A

Stars produce their own heat and light by a process called nuclear fusion

20
Q

How can moons be seen

A

They reflect light off of planets and stars

21
Q

How is the moon kept in orbit with earth

A

By force of gravity and speed

22
Q

How does the moon affect tides

A

-gravitational pull
-high tides
-low tides
-sun
-earths tilt

23
Q

Gravitational pull meaning

A

The moons gravity pulls on earth’s water,this causes water in the oceans to move,creating tides

24
Q

High tides

A

The earths side which is closer to the moon has gravitational pull,which forms a bulge on either side of the earth as both sides are being affected by the moons gravitational pull

25
Q

How many high tides are there per day

A

2

26
Q

How are spring tides formed

A

When the sun,earth and moon are in line,we get the biggest difference in water depth between high and low tides.This means when there is a high tide,the water springs fourth and therefore it is called a spring tide

27
Q

How many spring tides are there in a month

A

2

28
Q

How long does it take the earth to rotate around its axis once

A

27.3 days

29
Q

Meaning of evaporation

A

Evaporation can occur when particles in a liquid escape to form a vapour

30
Q

What is a pure substance

A

Made of only 1 particle

31
Q

Name the three states of matter

A

Solid,liquid,gas

32
Q

What are atoms

A

Small particles which make up everything in exutencd

33
Q

What are compounds

A

2 or more chemical elements chemically joined

34
Q

What is an element

A

Made of 1 atom only

35
Q

What is a mixture

A

2 or more elements/compound not joined together

36
Q

What is a molecule

A

2 or more non metal elements chemically joined together

37
Q

What is diffusion

A

When molecules move away from the object and spread out in the air

38
Q

What is solubility

A

The mass of solute that can dissolve in the amount of solvent at a temperature

39
Q

What is a solute

A

The substance being dissolved

40
Q

What is a solvent

A

The substance doing the dissolving

41
Q

Solution

A

The mixture of the solvent and a solute

42
Q

Soluble meaning

A

A substance which can dissolve in the solvent