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Science Olympiad > Crime Busters (Powders) > Flashcards

Crime Busters (Powders) Flashcards

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0
Q

Sand

NOTE: Does nothing, may have black specks.

A 
Crystal Shape: Random
Color: White
Solubility: Yes
pH: 7
HCI: None
Iodine: none; bad odor
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1
Q

Sodium Acetate

NOTE: Endothermic and had a distinctive odor.

A 
Crystal Shape: Powder
Color: White 
Solubility: Yes 
pH: 9 
HCI: none
Iodine: None
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2
Q

Calcium Carbonate

NOTE: The powder it self is very very airy and hope-y

A 
Crystal Shape: Powder
Color: White 
Solubility: No
pH: 7
HCI: Fizz
Iodine: none; the color looks sort of like mustard/ peanut butter
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3
Q

Vitamin C

NOTE: My have a colored tint green, yellow, pink, orange,( if from tablets). Distinctive smell.

A 
Crystal Shape:  Grains
Color:White
Solubility: Yes 
pH: 2
HCI: None 
Iodine: Clears it
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4
Q

Salt

NOTE: Delayed reaction the iodine ( may be hard to observe)

A 
Crystal Shape: Grains
Color: White
Solubility: Yes
pH: 7
HCI: None
Iodine: None
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5
Q

Calcium Carbonate

NOTE: The powder it self is very airy and hole-y

A 
Crystal Shape: Powder 
Color: White 
Solubility: Yes 
pH: 7
HCI: None 
Iodine: None; the color looks sort of like mustard/ peanut butter
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6
Q

Sugar

NOTE: Similar to salt but grains are slightly rounded

A 
Crystal Shape: Grains
Color: White 
Solubility: Yes
pH: 7
HCI: None 
Iodine: None
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7
Q

Flour

NOTE: Clumps with water

A 
Crystal Shape: Powder
Color: Off-White 
Solubility: no; lumpy 
pH: 7
HCI: None 
Iodine: Blackens it
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8
Q

Cornstarch

NOTE: Clumps with water

A 
Crystal Shape: Powder
Color: White 
Solubility: no
pH: 7
HCI: None 
Iodine: Blackens it.
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9
Q

Gelatin

NOTE; Swells in water

A 
Crystal Shape: Grains
Color:Tan 
Solubility: No; turns into gel
pH: 7
HCI: None
Iodine: None
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10
Q

Alka-Seltzer

NOTE: Fizzes with EVERYTHING.

A 
Crystal Shape: Powder
Color: White 
Solubility: Yes 
pH: 9
HCI: Fizz
Iodine: Fizz
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11
Q

Yeast

NOTE: Generally easy to identify since it smells sort of like bread most of the time

A 
Crystal Powder: Pellets 
Color: Tan 
Solubility: No 
pH: 7
HCI: None 
Iodine: None
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12
Q

Baking Soda

NOTE: Rough texture (kinda)

A 
Crystal Powder: Powder
Color: White 
Solubility: Yes
pH: 9
HCI: Extremely fizzy for a long while. 
Iodine :None; more red-brown than Plaster Paris
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13
Q

Gypsum

NOTE: Hardens in water

A 
Crystal Powder: Powder
Color: White 
Solubility: No 
pH: 7
HCI: None
Iodine: None
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Science Olympiad (3 decks)

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