Introduction to Chemistry

What is meant by chemistry?

• Chemistry is the study of biochemistry.

• Chemistry is the study of matters.

• Chemistry is the study of atoms and molecules.

• Chemistry is the study of the use of chemicals.

The chemical that can be used in food as a

• -Preservative

• -Antioxidant

• Vitamin

• -Colouring

How do you make a hypothesis?

• Make a statement that relates responding and fixed variable.

• Make a statement that relates manipulated, responding and fixed variable.

• Make a statement that relates manipulated and fixed variable.

• Make a statement that relates manipulated and responding variable.

What is the variables you need to state in an experiment?

• Manipulated variable

• Responding variable

• Fixed variable

• Data variable

Which of the Personal Protective Equipment is used to protect our eyes during experiment?

• Eyewash

• Gloves

• Fume Chamber

• Goggles

What is the function of a laboratory coat?

• Protect our hands when handling chemicals.

• Prevent dust or splashes of

  chemicals into the eyes.

• Protect body and clothing against chemical spills.

• Keep our bodies warm when carrying out the experiment.

What is the function of a fume chamber?

• To wash and clean the chemical waste.

• To release out toxic vapour and pungent smells of solution from the laboratory.

• Protect our hands when handling chemicals.

• To remove chemical substances, oil, dirt and microorganisms from our hands.