Consist 2+ bonded atoms, easily split by chemical reactions and formula name (NaCl)

All compounds have hydrogen and atoms split with little energy

What's motor oil physical properties?

Clear appearance, low evaporation loss, moderate viscosity, high flash point (flammable at high temps), low pour point (not freezable at low temp)

high evaporation, flammable, low pour point, low visocity, darkened appearence

High viscosity, yellow appearance

Why mixture of aluminium+iron for electric conductivity

aluminium better electric conduct+10% less strength to prevent heat overload whilst iron has 7.9 density

less conductivity+low density+high strength

Quiz

L Everall 5 questions

Take the quiz

1What is a compound?
1. AConsist 2+ bonded atoms, easily split by chemical reactions and formula name (NaCl)
2. BAll compounds have hydrogen and atoms split with little energy
2Elements only one unable to split into simplier substances and has two atoms
1. ATrue
2. BFalse
3Mixture and compounds can be split into simplier substance whilst elements cannot
1. ATrue
2. BFalse
4What's motor oil physical properties?
1. Ahigh evaporation, flammable, low pour point, low visocity, darkened appearence
2. BHigh viscosity, yellow appearance
3. CClear appearance, low evaporation loss, moderate viscosity, high flash point (flammable at high temps), low pour point (not freezable at low temp)
5Why mixture of aluminium+iron for electric conductivity
1. Aaluminium better electric conduct+10% less strength to prevent heat overload whilst iron has 7.9 density
2. Bless conductivity+low density+high strength