LEARNING TASK 1: True or False: Write Ton the blank if the statement is true and F if the statement is false 1. In inelastic collision the kinetic energy of the system is conserved.
2. Momentum is conserved if the initial kinetic energy before collision is equal to the kinetic energy after the collision
3. In inelastic collision, the kinetic energy before the collision is always less than the kinetic energy
after the collision.
4. Objects in elastic type of collision stick together after the collision.
5. If there is no external force acting on the system, the total momentum of the system after collision is equal to zero.​

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.