8/3/2019 C1a part 1 LD

1/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Feed me. Now!!

I wishhed

build afire.

8/3/2019 C1a part 1 LD

2/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Recognise that a chemical change takes place if: there is a newsubstance made; the process is irreversible; an energy change takes

place.

State that the process of cooking food is an example of a chemicalchange.

Describe the changes that occur when an egg or meat is cooked: change

in appearance; change in texture.

State that eggs or meat are good sources of proteins.

State that protein molecules in eggs and meat change shape when eggsand meat are cooked

Outcomes:

8/3/2019 C1a part 1 LD

3/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

8/3/2019 C1a part 1 LD

4/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

8/3/2019 C1a part 1 LD

5/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

What are meat and eggs made from?

What word is missing?1) Amino acid2) Meat

3) Makes up hair4) Eggs and fish are also a good source5) Body builders take it to beef up!

_ _ _ _ _ _ _ _

8/3/2019 C1a part 1 LD

6/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Heating the protein changes its shape irreversibly. It makesit unravel! You can never get the original shape back again!

CookingNormal Protein

Cooked protein

What does this mean?

8/3/2019 C1a part 1 LD

7/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Proteins can have lots of different shapes!

8/3/2019 C1a part 1 LD

8/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Recognise that a chemical change takes place if: there is a new substance made;the process is irreversible; an energy change takes place.

State that the process of cooking food is an example of a chemical change.

Describe the changes that occur when an egg or meat is cooked: change in

appearance; change in texture.

State that eggs or meat are good sources of proteins.

State that protein molecules in eggs and meat change shape when eggs and meatare cooked

Outcomes:

8/3/2019 C1a part 1 LD

9/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Cooking food

TASK: Complete the sentences. You must use the words in the box at least once in

your answers:

Three foods that can be eaten raw are .

Three foods that need to be cooked to be eaten are .

Three reasons we cook food are

Three foods that you find protein in are

This is what happens to the protein when you cook meat and eggs

Chemical change changes shape heat irreversible protein broccolifruit nuts pork eggs chicken flavour texture kills

bacteria

8/3/2019 C1a part 1 LD

10/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Rearrange the words!

NEITORP

INGKOOC

SIBLEIRREV

TEAH

HEMCHICLA TIONREAC

8/3/2019 C1a part 1 LD

11/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

How can you tell if a chemical reaction has happened?

(What signs might there be?)

What happens to the protein molecules in eggs when they

are cooked? (what did the previous picture show? Can

you remember?)

8/3/2019 C1a part 1 LD

12/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

8/3/2019 C1a part 1 LD

13/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Time/seconds

Temperature ofthe egg /0C

Appearance ofthe egg

Cooking Egg results table and questions

1. At what temperature did the egg white turn from clear towhite?

2. Do you think this is an example of a chemical reaction? Saywhy you think this. (what has formed?) A _ _ _ / _ _ _ _ _ _ _

3. What have you done to cause this change what have you putinto the reaction _ _ _ _ / _ _ _ _ _ _

4. Is the process reversible or irreversible? Explain your answer.

5. Whats the name of the protein found in eggs? Do you know? Ihave mentioned it. _ _ _ _ _ _ _

8/3/2019 C1a part 1 LD

14/14

Objectives: 1) To know what meat and eggs are good sources of.

2) To know what happens to meat and eggs when we cook them.

Recognise that a chemical change takes place if: there is a new substance made;the process is irreversible; an energy change takes place.

State that the process of cooking food is an example of a chemical change.

Describe the changes that occur when an egg or meat is cooked: change in

appearance; change in texture.

State that eggs or meat are good sources of proteins.

State that protein molecules in eggs and meat change shape when eggs and meatare cooked

Outcomes: