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everything Ks3 SCI > Redeagle1208 > Flashcards

Redeagle1208 Flashcards

Prepare for all of the upcoming tests and End Of Yer exams

1
Q

What is anarobic respiration and where does it take place?

A

Anarobic respiration is respiration without air and it takes place in the cytoplasm.

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2
Q

What is the equation for anarobic respiration?

A

glucose → lactic acid+ energy

C6H12O6 → 2C3H6O3

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3
Q

What is aerobic respiration and where does it take place?

A

Aerobic respiration is respiration with air and it takes place in the mitochondrea.

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4
Q

What is the equation for aerobic respiration?

A

glucose+oxygen → water+ Carbon dioxide+ energy

C6H12O6+O2→ H2O+CO2

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5
Q

Name 3 substances in cigarettes which are addictive and carcinogens.

A

Nicotine, Tar, Carbon Monoxide

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6
Q

What is the order of witch the air travels inn the respiratory system?

A

Nasal cavities , Larynx/pharynx , Trachea , Bronchi , Bronchioles , Alveoli(gas exchange)

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7
Q

What is respiration?

A

Respiration is the chemical reaction which supplies the body with energy.

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8
Q

What are the adaptations of alveoli to increase gas exchange?

A
  1. 1-cell thick walls
  2. Soft/moist lining
  3. large surface area
  4. good blood supply
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9
Q

What happens to the intercostal muscles, volume of the rib cage, chest pressure, air and the diaphragm when inhaling

A

contract and move up and out, increases, decreases, enters, contracts and becomes straight.

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10
Q

What happens to the intercostal muscles, volume of the rib cage, chest pressure, air and the diaphragm when exhaling

A

relaxes and move down and in, decreases, increases, exits, relaxes and moves upwards.

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11
Q

what 4 things happen when someone has smokers cough?

A
  1. Mucus builds upon the celia on the trachea
  2. Makes it hard t breath and leads to wheezing
  3. Lungs get inflamed
  4. Tar builds up at the bottom of lungs
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12
Q

Name the 3 enzymes and their functions.

A
  1. lipaste- breaks fats into fatty acids and glycerol
  2. amylase- breaks starch into glucose
  3. Protese- breaks protein into amino acids
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13
Q

Where can all of the enzymes be found and made?

A

Small intestine and pancreas

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14
Q

What is the order of which food moves through the digestive system?

A

Mouth , oesophagus , stomach , S intestine , L intestine , rectum , anus

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15
Q

what are the functions of all of the organs in the digestive system?

A

mouth- chews food and breaks food down with saliva
oesophagus- pushes food into stomach by parestalsis
stomach- churns food and bracks food down with stomach acids
S intestine- absorbs nutrients
L intestine- absorbs liquids
rectum- stores feces
anus- where the feces is excreted

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16
Q

Name the 7 food groups.

A

protein , vitamins , fat , carbs , fiber , minerals , water

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17
Q

What are the in all of the 7 food groups needed for?

A

protein- growth and repair
fat- energy store, insulation , protection of internal organs
minerals- helps make important products in the body
Water- regulates body temp. , creates a environment for chemical reactions to occur.
Carbs- long term energy(starch) short term energy(glucose)
Fiber- keeps food moving through the digestive system
vitamins- helps with bodily functions

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18
Q

give 1 example for foods in each of the 7 food groups

A 
protein- fish
fat- oil/butter
fiber- dried fruits
minerals- milk 
vitamins- fruit & veg
water- water :)
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19
Q

that is the unit for energy?

A

j(joules)/ kj(kilojoules)

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20
Q

why does our body need energy?

A

to move and to normal bodily functions and allows organs to work

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21
Q

what is scurvy?

A

vit c deficiency

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22
Q

what is rickets

A

vit d deficiency

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23
Q

how do you test for sugar, starch,protein, fat?

A

benedicts solution(orange), iodine solution(black), biurot solution(purple), ethenol(milky white),

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24
Q

what are foods with good bacteria called?

A

pro-biotics

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25
Q

what is a diet?

A

what you eat

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26
Q

what is the function of the liver?

A

detoxifies the blood and produces bile which absorbs fat

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27
Q

where is bile stored?

A

the gall bladder.

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28
Q

what is the function of the pancreas?

A

produces insulin to control blood sugar lvls. and creates enzymes

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29
Q

how does a drug affect the body?

A

if affects chemical reactions and the nervous system

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30
Q

how does ethanol affect the body?

A

it slows the nervous system down

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31
Q

what is an atom?

A

the smallest particle that everything is made from.

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32
Q

what is an element?

A

a substance made from only 1 type of atom

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33
Q

what is a mixture?

A

a substance substance made by combining two or more different elements in such a way that no chemical reaction occurs.

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34
Q

what is a compound?

A

a substance made from chemically joining 2 or more different atoms together.

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35
Q

what is a molecule?

A

a substance made form 2 or more of the same type of atom chemically joined together

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36
Q

what is the reactive scale from most reactive to least reactive

A

potassium , sodium , lithium , calcium , magnesium , aluminum , (carbon) , zinc , iron , tin , lead , (hydrogen) , copper , silver , gold , platinum.

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37
Q

what happens when you react metal with an acid?

A

metal+ acid –> salt + hydrogen gas

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38
Q

what is reliability?

A

repeating the experiment.

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39
Q

what is a hypothesis?

A

a prediction

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40
Q

what is an independent variable?

A

the only thing you change in an experiment.

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41
Q

what is the Dependant variable?

A

what you measure in an experiment

42
Q

what is the control variable?

A

what you keep the same in an experiment.

43
Q

what is complete combustion?

A

when oxygen is sufficient

44
Q

what is incomplete combustion?

A

when oxygen in insufficient

45
Q

what is the equation for incomplete combustion?

A

fuel+ oxygen(little) -> carbon monoxide + carbon + water(soot)

46
Q

what is the equation for complete combustion?

A

fuel + oxygen(lots) -> carbon dioxide + water

47
Q

what are the components of the fire triangle?

A

heat , fuel , oxygen

48
Q

what is concentration?

A

how weak or strong an acid or alkali is

49
Q

what is corrosive?

A

a substance that burns skin or material

50
Q

what is the atomic number?

A

the number of protons in an atom which is the same as the number of electrons

51
Q

what is atomic mass?

A

total amount of protons and neutrons

52
Q

what is neutralisation?

A

when you deduce the concentration of an acid or alkali by adding the opposite.

53
Q

what is current?

A

in the rate of flow of charges around a circuit (amps/ A)

54
Q

what is voltage?

A

in the amount of energy supplied in each coulomb of charge(vlot/ V)

55
Q

what is resistance?

A

anything that slows down the current( ohm/Ω)

56
Q

what is a series circuit?

A

a circuit with only one way for the current to flow

57
Q

what is a parallel circuit?

A

a circuit with more that 1 way for the current to flow.

58
Q

what is the equation for ohms law(resistance)

A

resistance= volt/amp

59
Q

what is power?

A

is the amount of energy transfered in a given time

60
Q

what is the equation of power?

A

power=ampXvolt

61
Q

what is a magnet?

A

objects than can attract and repel objects if they are in the magnetic field range.

62
Q

what is an electro magnet?

A

a temporary magnet which only works when an electric current passes through it.

63
Q

how can you increase the strength of and electro

magnet

A

increase the amount of coils

increase the current

64
Q

name 3 magnetic metals

A

iron nickel cobalt

65
Q

what is the equation for photosynthesis?

A

H2O+ CO2–> O2+C6H12O6(light and chlorophyll)

66
Q

what are particles like in solids?

A

close together, cant move , cant be compressed, cant flow and have a fixed volume and shape

67
Q

what are the particles like in liquids?

A

close together but can move a bit and swap places. cant be compressed can flow but dont have a fixed volume

68
Q

what are the particles in gas like?

A

particles are far away from each other and can move around a lot. it can be compressed and con flow but doesn’t have a fixed volume.

69
Q

what is gas to liquid?

A

condensation

70
Q

what is gas to solid?

A

deposition

71
Q

what is liquid to gas?

A

vaporisation/evaporation

72
Q

what is liquid to solid?

A

solidification/freezing

73
Q

what is solid to gas?

A

sublimation

74
Q

what is solid to liquid?

A

fusion/melting

75
Q

what is an endothermic reaction?

A

a chemical reaction which breaks bonds and absorbs heat

76
Q

what is an exothermic reaction?

A

a chemical reaction which makes bonds and releases heat.

77
Q

what are the elements of a scientific experiment?

A
  1. question
  2. hypothesis
  3. experiment
  4. observation
  5. analysis
  6. conclusion
78
Q

what is the formula for pressure?

A

pressure= force/area

79
Q

what is the formula for moment?

A

moment= forceXdistance

80
Q

what is the formula for density?

A

density= mass/volume

81
Q

what is the formula for work done?

A

work= forceXdistance

82
Q

what is the formula for weight?

A

weight= massXgravity

83
Q

what is the formula for speed?

A

speed= distance/time

84
Q

what are the properties of metals?

A 
conductor of heat and electricity
shiny
dense
malleable
ductile
sonorous
85
Q

what are the properties of non-metals?

A 
poor conductor of heat and electricity
dull
low density
brittle
not sonorous
86
Q

what happens when metal dissolves in water?

A

it makes an alkaline solution

87
Q

non-metal solutions dissolve in water to make….

A

an acid solution

88
Q

what is the equation when water reacts with metal?

A

metal+ water -> metal hydroxide + hydrogen

89
Q

what are the elements in group 1?

A

alkali metals

90
Q

what are the elements in group 7?

A

halogens

91
Q

what are the elements in group 0?

A

noble gases

92
Q

what is special about the molecules in polymers?

A

they are long

93
Q

name the 7 energy stores.

A

chemical , elastic potential, gravitational potential , thermal , kinetic , magnetic

94
Q

what is the low of conservation of energy?

A

energy cannot be created of destroyed it can only be transfered from store to store.

95
Q

how can heat be transfered?

A

conduction , convention , radiation

96
Q

in what order does convection occur?

A
  1. particles are heated
  2. they move and become less dense
  3. they rise
  4. then they cool
  5. they contract an become dense again
  6. they fall
97
Q

what do hot objects emit?

A

infrared radiation

98
Q

how is continuous variation displayed?

A

in a histogram.

99
Q

how is discontinuous variation desplayed?

A

in a bar chart

100
Q

what is latent heat?

A

extra heat which helps to break intracellular bonds when changing the state of matter.

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