Chapter 1 The Properties of Matter (Physical Science)

Matter- is anything that has mass and take up space

Types of matter: Solid, Liquid, Gas

If something take up space, it has volume

The volume of a regular solid: length * width * height
units for volume: cm3(centimeter cube) or m3(meter cube) or mm3(milli meter cube)

The volume of a liquid: graduated cylinder
units: L or mL

The volume of an irregular solid:
Use the amount of water displaced
1 mL = 1 cm3

Mass - everything you are made of
Units of Mass: kg(killogram) or g(gram) or mg(milligram)

Weight - Mass * Gravity Gravity on Earth: 9.8 m/s2

Example: 50kg * 9.8 m/s2 = 490 N (Newton)

Density- the ratio of the mass of a substance to the volume of the substance
To find Density- mass/volume

Density of fresh water = 1 g/cm3 (gram per centimeter cube)

If an object has a density <>
If an object has a density > 1 (more than 1), it will sink
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When describing what something is many times we use Physical Properties

Physical properties are description of an object that can be measured without changing what the object is (appearance)

Thermal Conductivity- transfering heat

Solubility - ability to dissolve

Ductility - ability of substance to be pulled into a wire

Malleability - ability of substance to be rolled or pounded into thin sheets

Types of Physical Changes
Ice turn into H20
Melting ice cream
Cutting paper
ETC
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Chemical Properties- properties of the object that can change into new matter
example- 2Fe + O2 (Rust) --> 2FeO (Iron Oxide)

Reaction - chemical change

Signs of Chemical Change
-Color change -Release heat from the reaction
-Release of gas -Change in smell
-Smoke/fire/light -Foaming/Bubble

The differences between Physical Change and Chemical Change are
For Physical change property of the object stay the same and it usually reverseable
For Chemical change property of the object changes and it usually not reverseable