Chemical Detectives Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What colour does sodium turn in the flame test?

A

Orange

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are two chemical that indicate the presence of water?

A

Blue cobalt chloride and I white copper sulphate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the word equation for acid + metal?

A

Acid+ metal > hydrogen + salt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the sign for toxic?

A

A cross-skull in a triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the irritant(harmful) sign?

A

A large bold diagonal cross.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the sign for corrosive?

A

A liquid dropping on a surface and burning through doing the same to a hand in a triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the flammable sign?

A

Flames in a triangle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the sign for danger to the environment

A

A whale dying on the beach with burnt trees in a triangle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why do we use chemical tests?

A

It’s hard to find out what a colourless liquid is so we use a chemical test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why is it hard to find out what chemical a gas is?

A

Because they are odourless and colourless.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the Ph scale?

A

It identifies acids and bases and how or weak they are.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Name a natural indicator.

A

Beet root.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do we test Carbon dioxide?

A

Put a lit splint in carbon dioxide and it will go out/ breathe into lime water,it goes cloudy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How do we test hydrogen?

A

Put a lit splint in hydrogen and there will be a squeaky pop.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How do we test oxygen?

A

Put Amber’s into oxygen and they will re-light.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the word equation for metal + oxygen?

A

Metal + oxygen> metal oxide

17
Q

What is the word equation for carbonate+acid?

A

Carbonate + acid> carbon dioxide + salt+ water

18
Q

What is precipitation reaction?

A

It’s when two solutions are mixed together and one component from each of the solutions instantly attracts to each other forming a solid.

E.g. Sodium hydroxide + copper sulphate > (solid) copper hydroxide

Hewn two solutions are mixed together resulting in a solid made of a component from each of the solutions.

19
Q

Name 3 ways we can tell a chemical reaction is happening.

A

Bubbles appear releasing gas, change in temperature, fizzing, pop or bang is heard, change in mass, precipitation(a solid is made), change in colour.