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Calcluate density:a piece of sold metal has a mass of 43.5g and a volume of 15cm3. What is the density of the metal.
m/v 43.5g/15cm3 = 2.9g/cm3
describe a gas in terms of shape and particle movement
gas takes the shape of the holder, moves freely - air
describe a liquid in terms of shape and particle movement
liquid stays the shape of the holder, moves freely - water
describe a solid in terms of shape and particle movement
definate shape of volume, vibrates in place - block
describe the law of conservation of mass
the fact that matter is not created nor destroyed in any chemical or physical change
describe the relationship between temperature and thermal energy
the higher the temperature of an object, the higher its thermal energy
How do you know if something was chemically changed?
- - colors all change
- - heat and temperature change
- - ex. combustion
how do you know if something was physically changed?
same substance, different form
put the layers in order: which would be on the top, middle and bottom?a. 1g/mLb. 4.2 g/mLc. 0.57 g/mL
- top: 0.57g/mL
- middle: 1g/mL
- bottom: 4.2g/mL
what are 3 states of matter