Science 24 Chapter 1

Which is an example of how chemistry and technology have helped farming?

• Chemical pesticides and fertilizers help produce higher yields.

• Automatic barn cleaners and feeders are used

• Large tractors and cultivators allow one person to do the work of many.

• all of the above

Which substance was used in making soap 100 years ago?

• animal fat

• coconut oil

• canola oil

• water

Which synthetic fibre is used to produce waterproof and windproof clothing?

• cotton

• canvas

• Kevlar

• Gore-Tex

An example of a natural fibre is

• polyester

• cotton

• Kevlar

• nylon

A molecule that is made up of many small, identical sub-molecules is a(n)

• alloy

• polymer

• synthetic fibre

• polyster

Which is an example of a natural polymer?

• neoprene

• polystyrene

• spider web

• polyethylene

The polymer used to make Styrofoam cups and insulation is

• neoprene

• polyethylene

• polystyrene

• polyurethane

Which alloy is mostly used to make kitchen utensils?

• brass

• iron

• stainless steel

• superplastic steel

What safety symbol is this?

• Flammable 
• Oxidizing Agent
• No Open Flame
• Explosion

What safety Symbol is this?

• Flamable
• Oxidizing Agent
• No Open Flame
• Explosion