Physical versus Chemical Properties

I. Reviewing matter:

Matter: anything that has _______________ and takes up ______________

  1. Mass – the amount of ____________ in something
  2. Volume – the amount of ______________ something occupies

Is it Matter?

Yes

No

A car?

A box?

You?

Heat?

II. Property: a characteristic of a _________________ that can be _____________.

III. Physical property: a property that can be observed ________________ changing the _______________ of the substance. Examples: luster, ________________ (the ability to be hammered into ______________ _______________ ), __________________ (the ability to stretch into a _______________ ________________), melting point, _________________ point, density, solubility and specific heat.

IV. Special properties: 

Melting point: temperature at which a substance changes from a solid to a __________ at a given

H2O = ________________ or _________________________

Boiling point: temperature at which a substance changes from a __________ to a _____________ at a given pressure.

H2O = ________________ or _______________________

V. Chemical property: a property that can be only be observed by _________________ the _________________ of the substance. Examples: flammability, ability to rust, reactivity with vinegar

VI. Density: the amount of ___________________ per unit of ___________________.

  1. Density can be used to identify a substance.

Water’s density is ____________________.

VII. Calculations D = m/V = g/mL = g/cm3

Examples: A cube has a mass if 2.8g and occupies a volume of 3.67mL. Would this object float or sink in water? This object would _______________ in water because its density is _____________ than water whose density is ______________.

VIII. More Density Calculations

A liquid has a mass of 25.6 g and a volume of 31.6 mL.

What is the identity of the liquid? ______________________

*Use the information in the chart for reference.

Substance

Density (g/mL)

Mercury

13.6

Water

1.0

Ethanol

0.81