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Chemistry, Module 3 OCR > Group 2 > Flashcards

Flashcards in Group 2 Deck (17)
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1
Q

Colour of Ca flame

A

Red/orange

2
Q

Colour of Sr flame

A

Red

3
Q

Colour of Barium flame

A

Pale green

4
Q

How soluble is MgOH

A

Sparingly soluble

5
Q

How soluble is BaOH

A

Soluble

6
Q

How soluble is CaOH

A

Slightly soluble

7
Q

How soluble is SrOH

A

Soluble

8
Q

Reaction of CaCO3 and HCL

A

Produces

CaCl2
H20
CO2

9
Q

State of Magnesium oxide

A

White solid

10
Q

Trend in reactivity with oxygen as you go down group

A

Increase

Less energy needed in 1st and 2nd IE (more shielding)

11
Q

Why is radium not used

A

Radioactive metal

12
Q

State of Calcium oxide

A

White solid

13
Q

Gas produced when reacting with water

A

Hydrogen

14
Q

Indicator colour of Sr and Ba when reacting with water

A

Purple

as concentration of OH goes up
More soluble

15
Q

State of Sr

A

White solid

16
Q

What is a displacement reaction

A

Where a more reactive element

displaces a less reactive element

From solution of latter’s ions

17
Q

Colour of Mg flame

A

Yellow