Question 1:
Draw the following apparatus.
(a) Flat-bottom flask
(b) Conical flask
(c) Boiling tube
(d) Measuring cylind
Answer:
Draw the following apparatus.
(a) Flat-bottom flask
(b) Conical flask
(c) Boiling tube
(d) Measuring cylind
Answer:
Question 2:
(a) What is the meaning of the hazard symbols below?
(b) State two examples of chemicals with the hazard symbol in (a)(i).
Answer:
(a) (i) Poisonous / toxic
(ii) Irritant
(iii) Flammable
(iv) Explosive
(v) Corrosive
(b) Mercury and chlorine
(a) What is the meaning of the hazard symbols below?
(b) State two examples of chemicals with the hazard symbol in (a)(i).
Answer:
(a) (i) Poisonous / toxic
(ii) Irritant
(iii) Flammable
(iv) Explosive
(v) Corrosive
(b) Mercury and chlorine
Question 3:
Suhaimi sees a small fire on the laboratory table. What actions should he take?
Answer:
Inform his teacher. If possible, turn off the electrical supply. With the teacher’s help, use a suitable fire extinguisher to extinguish the fire. If he is not sure, he should leave the laboratory immediately.
Suhaimi sees a small fire on the laboratory table. What actions should he take?
Answer:
Inform his teacher. If possible, turn off the electrical supply. With the teacher’s help, use a suitable fire extinguisher to extinguish the fire. If he is not sure, he should leave the laboratory immediately.