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crime busters powders test

Total questions: 13

Worksheet time: 8mins

Name
Class
Date
1.

what powder is white, Ph of 6,7, has no reaction to HCI, blackens in iodine, formula is C27H48O20

a)

flower

b)

cornstarch

c)

backing soda

d)

Calcium Carbonate 

2.

which powder is white, PH of 6-7, fizzes in HCI, fizzes in Iodine, formula C16H17NaO14

a)

flower

b)

Sodium Acetate 

c)

Gypsum 

d)

Alka-selzter

3.

what powder is white, has a Ph of 8, has no reaction to HCI, has no reaction to Iodine, and has a formula of NaC2H3O2 

a)

Sodium Acetate 

b)

Calcium Carbonate 

c)

Gypsum 

d)

Baking Soda 

4.

what powder is tan

a)

Gelatin

b)

flower

c)

Yeast 

5.

This powder is also in perfect cubes. It is (a)   .

6.

(a)   swells in water and is the only one to do that.

7.

This powder is white, has a Ph of 6, has no reaction to HCI, has no reaction to Iodine, its formula is SiO2 

a)

sand

b)

Vitamin C

c)

sugar

d)

Gypsum 

8.

which powder is white, has a Ph of 6~7, has no reaction to HCI, has no reaction to Iodine, and its formula is C12H22O11 

a)

sand

b)

salt

c)

sugar

9.

(a)   is the only acidic powder, and the only one that clears in Iodine.

10.

what powder is white, has a Ph of 8, extreme fizz in HCI, has no reaction to Iodine, and its formula is NaHCO3 

a)

flour

b)

Gypsum

c)

baking soda

d)

calcium carbonate

11.

which powder is off-white, has a ph of 6~7, has no reaction to HCI, backens in Iodine.

a)

flour

b)

calcium carbonate

c)

baking soad

d)

Gypsum

12.

which powder is white, has a Ph of 7~8, fizzes in HCI, has no reaction to Iodine, its formula is CaCO3 

a)

Baking soda

b)

calcium carbonate

c)

Gypsum

d)

flour

13.

which powder is white, has a Ph of 6, jas no reaction to HCI, has no reaction to Iodine, and its formula is CaSO4· 2H2O 

a)

Gypsum

b)

calcium carbonate

c)

baking soda

d)

vitamin C