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Worksheets

Food Tests

Total questions: 17

Worksheet time: 8mins

Name
Class
Date
1.

The image shows a color change from blue to purple. This indicates that _____ is present

a)

Protein

b)

Fat

c)

Simple sugars

d)

Vitamin C

2.

Name the type of food that was being tested.

a)

Benedict's test

b)

Glucose

c)

Protein

d)

Iodine

3.

Which of the following tests for protein?

a)

Iodine

b)

Benedicts

c)

Biuret

d)

Emulsion

4.

Which of the following tests for glucose?

a)

Iodine

b)

Benedicts

c)

Biuret

d)

Emulsion

5.

When starch is present iodine turns...

a)

purple

b)

blue-black

c)

orange

d)

brick red

6.

When protein is present Biuret turns...

a)

purple

b)

blue-black

c)

orange

d)

brick red

7.
When large amounts of glucose is present Benedicts turns...
a)
purple
b)
blue-black
c)
brick-red
d)
green
8.

A negative test for starch will cause Iodine to stay...

a)

orange/red

b)

blue

c)

black

d)

brick red

9.

A negative test for protein will cause Biuret to stay...

a)

brick red

b)

blue

c)

black

d)

orange

10.

A negative test for glucose will cause Benedicts to stay...

a)

brick red

b)

blue

c)

black

d)

orange

11.

How do you test for lipids?

a)

By using Ethanol and water

b)

By using Benedicts solution

c)

By using Iodine

d)

By using Biuret test

12.

What is a positive result for the lipid emulsion test?

a)

milky white colour

b)

clear

c)

yellow

d)

green

13.

In this experiment, you must put your test tubes into a hot water bath

a)

Benedict's Test

b)

Biurets Test

c)

Iodine Test

d)

Ethanol Emulsion Test

14.

The building blocks of proteins are

a)

carbohydrates

b)

amino acids

c)

sugars

d)

fatty acids

15.

This photo represents a

a)

negative test for glucose

b)

negative test for protein

c)

positive test for starch

d)

positive test for glucose

16.

The building blocks of starch are

a)

glycerol

b)

amino acids

c)

sugars

d)

fatty acids

17.

The building blocks of lipids are

a)

Starches

b)

Fatty acids and Glycerol

c)

Sugars

d)

Amino Acids