Chemistry 🧪

Part A Hypothesis

If two aqueous chemicals are mixed and an insoluble solid forms, this means a precipitation reaction has occurred. The solid that forms is called a precipitate.

Part B Hypothesis

If different metals are added to hydrochloric acid then they will react at different rates because some metals are more reactive than others

How many electrons, protons and neutrons in magnesium

12

Symbol for iron

Fe

Symbol for Zinc

Zn

Symbol for copper

Cu

What is the word equation for aluminium and HCI

Aluminium + hydrochloric acid = aluminium chloride + hydrogen

What is an exothermic reaction?

An exothermic reaction is a chemical reaction that releases energy as heat, causing the surroundings to become warmer.

Write the formula for aluminium and HCI

Done

Why is there no precipitation in sodium chloride + copper sulfate

No precipitation occurs because both products are soluble in water so no insoluble solid forms.

Why is there no precipiation in Sodium chloride and cobalt chloride

They are both soluble

1st RIsk

hydrochloric acid can burn skin and eyes so wear safety goggles, lab coat and only use the certain amount your teacher provided

2nd Risk

Hydrogen is extremely flammable creating a fire risk so keep flames or ignition sources away from it

1st Improvement

Repeat each test one more time and compare the results, this would make the results more accurate

2nd Improvement

Use prescise measuring equipment to ensure that the same volume of solution is added in each time

Write a balanced equation for copper sulfate + sodium hydroxide = copper hydroxide +sodium sulfate

done