Seperate Chemistry 1

Question 1

Properties of transition metals?

Uses?

Answer 1

Hard strong shiny
 malleable-pipes
High melting point
Electric conductor-wiring 
Catalyst-iron

Question 2

What are alloys?

Answer 2

Are made by adding another element to a pure metal

Question 3

Why is rusting of iron a redox reaction?

Answer 3

Because iron loses electrons so is oxidized and oxygen gains electrons.

Question 4

3 ways to prevent rusting?

Answer 4

Painting
Piling
Galvanizing-cost of zinc layer added

Question 5

What are the steps to carry out a titration?

Answer 5

1.Using Burette put acid into the Conical flask
2.Use pipette to add certain volume of alkali to the conical flask drop by drop
3.swirl the content regularly
4.indicator changes color when solution has neutralized.
Phenolphthalein is pink in alkali and colourless in acid.
Methyl orange is yellow in alkali and red in acid.
5.Repeat steps to get concord at results.