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STEM Quiz

Total questions: 13

Worksheet time: 8mins

Name
Class
Date
1.

If a solution is acidic, it can be neutralized by adding

a)

a stronger acid

b)

heat

c)

a base

d)

a weaker acid

2.

Lemons would be classified as a

a)

Strong base

b)

Weak Base

c)

Neutral

d)

Weak Acid

3.

Marti took a balloon and filled it with 14 grams of baking soda. She then put 40 mL of vinegar into an empty water bottle. Marti stretched the balloon onto the top of the bottle . She then flipped the balloon up so the baking soda fell into the vinegar. She observed it bubbling and could hear it fizzing. Marti laughed as the balloon filled with the carbon dioxide that was given off. After the reaction stopped, on the bottom of the bottle, Marti notices a white and clear substance. She remembers that she had learned that when you mix an acid (Vinegar) and a base (baking soda), you create

a)

acid and metal

b)

acid and base

c)

base and water

d)

salt and water

4.

Litmus solution is purple colured dye extracted from__________ plant

a)

Lime

b)

Lichen

c)

Lavender

d)

Lotus

5.
What property do all three of these common household substances have in common?
a)
they are all basic
b)
they taste sour
c)
they have a pH below 7
d)
they all turn litmus paper red
6.

When an acid and a base are mixed, what is the reaction called?

a)

Neutralization

b)

Hydrolyzed

c)

Hydro Ionization

d)

A salt and a water reaction

7.

Pickles form by soaking in an acid. What are some properties of pickles

a)

Conducts electricity, bitter, turns litmus blue

b)

Slippery, sour, turns litmus blue

c)

Slippery, bitter, turns litmus blue

d)

Sour, turns litmus red, can conduct electricity

8.

Bases are generally ............................ to touch

a)

Hot

b)

Cold

c)

Soapy

d)

Rough

9.

Bases turn Red litmus to ...................

a)

Green

b)

Yellow

c)

Blue

d)

Black

10.

If the given solution neither changes the colour of the red litmus nor blue litmus paper , it is ..........................

a)

An Acid

b)

A base

c)

Neutral

d)

Colourless

11.

Bases turn yellow turmeric paper to ...........................

a)

Blue

b)

Red

c)

Pink

d)

Orange

12.
Which of the following is a base?
a)
orange juice
b)
water
c)
vinegar
d)
dishwashing detergent
13.
 Which of the following is an acid?
a)
shampoo
b)
baking soda
c)
orange juice
d)
water