# data[].attributes.body
You must know the symbols of the first 20 elements.

# data[].attributes.body
Proton is positive and has a mass of 1.
Electrons are negative and have no mass.
Neutron are neutral and have a mass of one.

# data[].attributes.attachment_link.title
Parts Of An Atom | Properties of Matter | Chemistry | FuseSchool

# data[].attributes.body
The atomic number is always the smaller number and the mass number is always the bigger number.

# data[].attributes.body
Proton is positive and has a mass of 1.
Electrons are negative and have no mass.
Neutron are neutral and have a mass of one.

# data[].attributes.body
Helpful summary with a small quiz at the end.

# data[].attributes.attachment_link.title
BBC Bitesize - KS3 Chemistry - Atoms, elements and compounds - Revision 1

# data[].attributes.attachment_link.description
Learn about the differences between atoms, elements and compounds with BBC Bitesize KS3 Science.

# data[].attributes.body
You must know the pictures of each and the definition

# data[].attributes.attachment_link.readable_text
The sperm pass through the , and mix with fluids produced by the . The fluids provide the sperm cells with nutrients. The mixture of sperm and fluids is called semen.

Penis and urethra

to pass urine out of the man's body

to pass semen out of the man's body

The is the tube inside the penis that can carry urine or semen. A ring of muscle makes sure that there is no chance of urine and semen getting mixed up.

# data[].attributes.attachment_link.title
BBC Bitesize - KS3 Biology - Human reproduction - Revision 1

# data[].attributes.attachment_link.description
The sperm pass through the , and mix with fluids produced by the . The fluids provide the sperm cells with nutrients. The mixture of sperm and fluids is called semen. to pass urine out of the man's body to pass semen out of the man's body The is the tube inside the penis that can carry urine or semen.

# data[].attributes.body
Gametes have adaptations to increase the chances of fertilisation and successful development of an embryo. For example, sperm cells are produced in large numbers to increase the chance of fertilisation. Sperm cells have these adaptations:

a tail to move them towards an egg cell

many mitochondria to provide energy

23 chromosomes in the nucleus (instead of 46).

# data[].attributes.body
The two ovaries (one of them is called an ovary) contain hundreds of undeveloped female gametes (sex cells). These are called ova(one of them is called an ovum) or egg cells. Women have these cells in their bodies from birth, whereas men produce new sperm continually.

# data[].attributes.body
The two 🤬 (single testis) are contained in a bag of skin called the 🤬. The 🤬 have two functions:

to produce millions of male gametes (sex cells) called sperm

to make male sex hormones, which affect the way a man's body develops

# data[].attributes.body
The Menstrual Cycle lasts about 28 days, but it can be slightly less or more than this. The cycle stops while a woman is pregnant. These are the main features of the menstrual cycle:

The start of the cycle, day 1, is when bleeding from the 🤬 begins. This is caused by the loss of the lining of the uterus, with a little blood. This is called menstruation or having a period.

By the end of about day 5, the loss of blood stops. The lining of the uterus begins to re-grow and an egg cell starts to mature in one of the ovaries.

At about day 14, the mature egg cell is released from the ovary. This is called ovulation

The egg cell travels through the oviduct towards the uterus.

If the egg cell does not meet with a sperm cell in the oviduct, the lining of the uterus begins to break down and the cycle repeats.

Fertilisation occurs in the oviduct.

# data[].attributes.attachment_link.title
This is Your Period in 2 Minutes | Glamour

# data[].attributes.body
The fertilised egg divides to form a ball of cells called an embryo. The embryo attaches to the lining of the uterus. It begins to develop into a foetus and finally into a baby.

The foetus relies upon its mother as it develops. These are some of the things it needs:

protection against knocks, bumps, and temperature changes

oxygen for respiration

nutrients (food and water)

The developing fetus also needs its waste substances removing.

The foetus is protected by the uterus and the amniotic fluid, a liquid contained in a bag called the amniotic sac.

# data[].attributes.attachment_link.title
BBC Bitesize - KS3 Biology - Diet - Revision 1

# data[].attributes.attachment_link.description
Learn about the uses of nutrients and what makes a balanced diet with BBC Bitesize KS3 Science.

# data[].attributes.body
Iodine is abrown chemical that turns blue/black when starch is present.

# data[].attributes.body
Biuret Solution is a blue chemical that turns purple when protein is present.

# data[].attributes.body
The Digestive System is not covered in the Cambridge book until grade 6 so here is a helpful website with a small quiz at the end

# data[].attributes.attachment_link.readable_text
The food we eat has to be broken down into other substances that our bodies can use. This is called digestion. Without digestion, we could not absorb food into our bodies and use it.

Digestion happens in the digestive system, which begins at the mouth and ends at the anus.

After we swallow, our food passes through these organs in turn:

oesophagus or gullet

stomach

small intestine

large intestine

Different things happen to food as it passes through the digestive system:

food is digested in the mouth, stomach and small intestine

digested food is absorbed into the bloodstream in the small intestine

excess water is absorbed back into the body in the large intestine

any undigested food passes out of the anus as faeces when we go to the toilet

The liver and the pancreas play an important part in digestion. The liver produces bile, which helps the digestion of lipids (fats and oil). The pancreas produces biological catalysts called digestive enzymes which speed up the digestive reactions.

You need to have JavaScript enabled to view this video clip.

# data[].attributes.attachment_link.description
The food we eat has to be broken down into other substances that our bodies can use. This is called digestion. Without digestion, we could not absorb food into our bodies and use it. Digestion happens in the digestive system, which begins at the mouth and ends at the anus.

# data[].attributes.body
Enzymes are difficult, here is a video to help.

# data[].attributes.body
More Help.

# data[].attributes.body
3 types- Arteries, veins and capillaries.

# data[].attributes.body
When you get bored reading- watch the video.

# data[].attributes.attachment_link.title
GCSE BBC Science Bitesize - Blood Circulation

# data[].attributes.body
Keywords in Bulgarian and English

# data[].attributes.headline
BBC Bitsize- quick revision for the Cambridge Syllabus

# data[].attributes.subject
BBC Bitsize- quick revision for the Cambridge Syllabus

# data[].attributes.body
Helpful Summary with a small multiple choice quiz at the end.

# data[].attributes.attachment_link.description
A secondary school revision resource for Edexcel GCSE Additional Science about nerves and hormones

# data[].attributes.body
The rate of reaction can be increased by
1. Increasing the surface area- more space to work (indigestion tablets)
2. Increasing the temperature- (X experiment with thiosulphate) particles vibrate and move more.
3. Increasing the concentration-more particles to react. (Magnesium ribbon and acids)
4. Using a catalyst. (Elephant toothpaste)
5. Using a smaller container-forcing particles to react as there is less space to move.

# data[].attributes.attachment_link.title
How to speed up chemical reactions (and get a date) - Aaron Sams

# data[].attributes.body
A catalysts speeds up a reaction without being used up itself. Example elephant toothpaste and making oxygen.

# data[].attributes.body
Increasing Surface Area allows more space for reactions to occur

# data[].attributes.body
Increasing temperature increases the kinetic energy of particles allowing them to move and crash together more.

# data[].attributes.body
In the Bulgarian Textbook- pages 118-124- It is in the Cambridge curriculum but in Grade 5 so it is in the grade 5 textbook.

# data[].attributes.body
3 functions of the skeleton;
•1. It supports your body

•2. It helps you move.

•3. It protects your soft organs.

# data[].attributes.body
Ball and socket joint in the shoulder and hip allow movement in all directions.

Hinge Joints only allow movement in one direction. example elbow and knee

Fused/fixed Joints allow no movement. example skull.

# data[].attributes.body
A tendon connects a muscle to be bone.

# data[].attributes.body
Increases the number of particle there are to bind in the reaction

# data[].attributes.body
Example bicep and tricep.

When the bicep contracts (gets shorter) the tricep relaxes.
When the tricep contracts, the bicep relaxes.

# data[].attributes.body
Independent variable is thing you change in an experiment.
Dependent variable is the thing you measure.
Control variable are all the things that you keep the same.

# data[].attributes.body
Helpful revision notes with a small quiz at the end.

# data[].attributes.attachment_link.title
BBC - GCSE Bitesize: Factors affecting the rates of reaction

# data[].attributes.attachment_link.description
A secondary school revision resource for Edexcel Additional GCSE Science about chemical reactions and rates of reaction

# data[].attributes.body
Oxygen relights a glowing splint (elephant toothpaste)

Carbon dioxide turns lime-water milky (can't say white as it is still transparent.)