Chemical Tests

What term is given to a solid formed in a reaction between two solutions?

• Filtrate

• Precipitate

• Residue

• Solution

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Sodium hydroxide solution can be added to an unknown solution to indicate the presence of....

• Iron (II)

• Iron (III)

• Copper (II)

• All of them

What is observed when sodium hydroxide is added to a solution of Fe²⁺ ions?

• Green precipitate

• Brown precipitate

• Blue precipitate

• White precipitate

Tags

NGSS.MS-PS1-2

Chlorine gas.......

• will turn limewater chalky

• will turn damp blue litmus paper red then bleach it white

• will burn with a pop

• will turn damp red litmus blue paper

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

A positive test for the presence of water shows what colour change for anhydrous copper sulphate

• white to blue

• blue to white

• pink to blue

• blue to pink

A student puts a lit splint into a beaker of gas and the flame is extinguished. What does this tell him?

• The gas must be completely unreactive

• The gas must not be hydrogen

• The gas must be carbon dioxide

• The gas must not be carbon dioxide

Tags

NGSS.MS-PS1-2

Barium chloride solution is added to another solution of iron(II) sulfate. A white precipitate forms. Identify the white precipitate.

• iron chloride

• barium sulfate

Tags

NGSS.MS-PS1-2

chemical used to detect the presence of another substance in a sample

• chemical reaction

• control

• variable

• indicator

What colour precipitate does barium sulphate form?

• White

• Green

• Yellow

• Cream

What is initially observed when sodium hydroxide is added in excess to a solution of Fe²⁺ ions?

• Green precipitate

• Brown precipitate

• Blue precipitate

• White precipitate

Tags

NGSS.MS-PS1-2