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Matter & Energy: Properties of Objects

TSW generalize that matter is moving particles too small to be seen without tremendous magnification. TSW measure the properties of matter including mass, volume, and density. TSW distinguish materials as conductors or insulators. TSW categorize mate
by

Michael Goorsky

on 13 February 2015

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Transcript of Matter & Energy: Properties of Objects

A pure substance only has one type of atom or molecule.
Elements are pure substances with only 1 type of atom.

Periodic Table of the Elements

A compound has 2+ types of atoms that have been chemically bonded together.

The properties of a compound are different than original properties of the atoms that were used to make it.

Ex. Table Salt: NaCl (Sodium Chloride)
- Sodium and Chloride are both very reactive.
- Table salt is quite stable.

Properties of Objects p. 10-13 & 43
It is how much matter is in something.

Measured in kg, g, mg

kg= kilogram

g = gram

mg = milligram

1000g = 1 kg
1000mg= 1 g
Tool used to measure mass is triple beam balance
Amount of downward pull on an object due to gravity.

Measured in Newtons (N)

Tool = spring scale

mass weight

increase weight = increase gravitational force on object

Closer to Earth = increase weight
Pure or Mixed?
p 21-23
Molecules p. 18-19
A molecule is when two or more atoms bond together.
- They can be the same or different atoms
Different – water (H2O) – hydrogen & oxygen
atoms
Same – oxygen (O2) – oxygen bonded with itself

The smallest amount of a substance made of combined atoms.
- More atoms = larger molecule

- The different number of atoms determine the substance.
- The different type of atoms determines the substance.

Atoms and molecules are always in motion.
- More energy means they move more.
- Liquids and gases move more than solids.
Matter p. 9
Matter & Energy: Properties of Objects
What properties does a basketball have?
Matter & Energy: Properties of Objects
Atoms
Atoms p. 16-17
An atom is the smallest and most basic unit of matter.

Atoms are the building blocks of everything.

Substances are determined by what type of atom they are made of. Also their arrangement affects what they are.

Atoms are too small to be seen.

Nearly 100 trillion atoms can be fit on the end of a pin.

Matter
Molecules
Measuring the Properties
- size
- shape
- temperature
- color
TSW generalize that matter is moving particles too small to be seen without tremendous magnification.
TSW measure the properties of matter including mass, volume, and density.
TSW distinguish materials as conductors or insulators.
TSW categorize materials as pure substances (i.e., elements, compounds) or mixtures (i.e. homogenous or heterogeneous).

physical property
matter
mass
weight
volume
density
atom
element
molecule
molecule
compound
mixture
states of matter
solid
liquid
gas
conductor
insulator
Matter is anything that has mass & takes up space

Matter can be living or nonliving
- Living: matter is found in all life on Earth (makes up cells)
- Non-living: matter is found in all non living things (water, rocks)

Matter is made of atoms.
- Have protons, neutrons, and electrons.
- The number of protons and electrons determines the element.

Examples:
1. Basketball (ball and air inside)

2. Drinking water

Non-examples:
1. fire

2. electricity

http://www.ptable.com/
The amount of space an object occupies.

Volume is measured with formulas or displacement.

Formula (of a rectangular prism)

V = L x W x H

Displacement --see p. 13


Units= kl, l, ml, cc
kl= kiloliter l= liter
ml= milliter cc = cubic centimeter
1cc= 1ml
Tools to use: graduated cylinder, ruler, meter stick

Density is the amount of mass in a given space.

Density = mass divided by volume




Grams per cubic centimeter = g / cc - solids

Grams per milliliter = g / ml - liquids

Objects with a density less than water will float.

Objects with a density more than water will sink.
Chemistry & Physics
P
R
O
P
E
R
T
Y
Pure substances are elements and compounds.
R
Objects have mass, volume, and density.
Plurality of atoms (more than one) bonded are molecules
Everything is made of atoms.
R
The way to find density is mass / volume
Y
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