unit 12-17 Unit test Flashcards
Important Factors when choosing materials to make a product
Cost, Recycling ability, Durability, breakage, Safety, mobility, waste production, hazards to environment, effect on taste
How many steps in the life cycle of a product
4(if It goes straight to the end of life and doesn’t get recycled.)
First part of the life cycle of a product
Raw Material
Second part of the life cycle of a product
Manufacturing
The third part of the life cycle of a product
Useful life
The fourth part of the life cycle of a product
End of life (recycled)
What is glass made of
Soda ash, limestone, sand
What is aluminum made of
Bauxite
what is Plastic made out of
(hydrocarbons) Oil
Name one chemical property of substances
color change, reactivity to copper chloride, reaction to hydrochloric acid and water, flammability, density compared to water & ethanol (alcohol), corrosion
Name one physical property of a substance
Electroconductivity, luster, scratch test, color (description), flexibility, transparency
What stage are most elements at room temperature
Solid because 2/3 are metals
Alkali Metals
+1 charge, group 1, reactive
Alkaline Earth Metals
+2 charge , group 2, reactive
Other Metals
groups 13-15 and the charge varies through the groups
