A student compared two samples of matter. He recorded the results in this chart.
Sample A
Sample B
Appearance: shiny and yellow Appearance: dull and yellow
Mass: 8 g
Mass: 8g
Density: 19.3 g/cm3
Density: 2.0 g/cm3
Good conductor of electricity Poor conductor of electricity
Melting point: 1064°C Melting point: 115°C
Which property do the two samples have in common?
A. Melting point
B. Volume
C. Color
D. Electrical conductivity

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?