1. An object's weight is the amount of space it occupies? Explain. 2. The mass of an object is equal to its weight? Explain.
3. Is air matter? How can you tell?
4. Is it possible for an object's weight to change while its mass remains constant? Explain.
5. Create and solve 2 application exercises (for example with objects) using the concepts of mass and weight.

Alow cost, low earth orbit (leo) satellite is to be fabricated at a university, for subsequent launch by rocket. what are the constraints and objectives for selection of a material suitable for the satellite bus (i.e. the structure)? explain each in brief. (15 marks) b)suggest sources of data which could support the selection of materials for applications in space. (5 marks) c) set weights for the objectives listed in (2a) using the digital logic method. (5 marks)

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Ways that industry and agriculture use physical properties to separate substances