Year 9 FIT Task

• Science
• Lower Secondary (Key Stage 3)

Year 9 FIT Task

Diffusion is the movement of particles from an area of high concentration to an area of low concentration. 

Respiration

glucose+oxygen (reacts to make)  carbon dioxide + water

Respiration takes place in the mitochondria

What is the job of the mitochondria?

1. controls what enters or leave the cell
2. To control what happens inside the cell
3. The place where respiration takes place
4. Where chemical reactions take place

What are the reactants in respiration?

1. oxygen and water
2. carbon dioxide and oxygen
3. carbon dioxide and water
4. glucose and oxygen

Carbohydrate is broken down by carbohydrase in to simple sugar (glucose)

Protein is broken down by protease in to amino acids

Lipids (fats) is broken down by lipase to produce fatty acids and glycerol

Bile is produced in the liver and stored in the gall bladder

The small intestine is where small soluble food molecules is absorbed

Which organ produces bile to aid in digestion?

1. Pancreas
2. Spleen
3. Gallbladder
4. Liver

What enzyme breaks down proteins into amino acids?

1. Protease
2. Lipase
3. Carbohydrase
4. Amylase

Lipase breaks lipids down into ___________.

1. Glucose
2. amino acids
3. fatty acids and glycerol
4. sucrose

In digestion, where is soluble food absorbed into the body?

1. mouth
2. stomach
3. large intestine
4. small intestine

Food Tests

Iodine is use to test for starch. For a positive result food will turn black (blue-black)

Benedict reagent is used to test for sugar. Positive result - green - orange - brick red. 

Ethanol is used to test for lipids. Positive result - will turn cloudy white.

Biuret reagent is used to test for protein. If protein is present solution turns lilac (purple). 

If a food test is positive for proteins what colour does the solution become?

1. Red
2. Blue
3. Black
4. Purple

If a food test is positive for starch what colour does the solution become?

1. Red
2. black
3. Green
4. Purple

If a food test is negative for simple sugars what colour does the solution stay?

1. Blue
2. Black
3. Orange
4. Brown

If a food test is negative for starch what colour does the solution stay?

1. Blue
2. Black
3. Red
4. Orangy-Brown

If a food test is positive for simple sugars what colour does the solution become?

1. Brown
2. Red
3. Black
4. Blue

Group 1 elements are called alkali metals

Group 7 elements are called halogens

Group 0 elements are called noble gases

In group 1 reactivity increases down the group. 

In group 7 reactivity decreases down the group. 

The group number tells you the number of electrons in the outer shell. Group 0 elements all have a full outer shell. 

What does the group number tell you?

1. The number of electrons in the element
2. The number of protons in the element
3. The number of electrons in the outer shell
4. How reactive the element is

What is the other name for Group 0 elements?

1. Noble gases
2. Alkali metals
3. Halogens
4. Transition metals

What is the other name for Group 1 elements?

1. Noble gases
2. Alkali metals
3. Halogens
4. Transition metals

What is the other name for group 7 elements?

1. Noble gases
2. Halogens
3. Alkali metals
4. Transition metals