1. Expla
2. State four hazards encountered at school.
3. Explain why toxic chemicals are classified as hazard.
4. Give two reasons why fuel tankers have warning and safety signs pasted at their back.
5. State five safety precautions against accidents on our roads.
6. (a) What is protective clothing?
(b) Give three examples of protective clothing and state what each does.
7. Explain why hazards are dangerous.

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.

What is the percent by mass of magnesium sulfate in mgso4.7h2o

Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.