Name: ______________ Period: ___________ Chapter 4
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- Slide 1
- Name: ______________ Period: ___________ Chapter 4
- Slide 2
- Whats the Matter? Anything that has ______________ and
_____________________ is matter. Often discussed in terms of mass
and weight Composed of elements
- Slide 3
- Physical Properties Characteristics of a substance that can be
observed without changing the composition of the substance.
Include: ____________________
- Slide 4
- Chemical properties Describes how a substance reacts with other
substances. Examples include: ____________________
- Slide 5
- Atoms the smallest part of an element that has all the elements
properties. Composed of __________ and ___________ and
______________ that revolve swiftly around the nucleus.
- Slide 6
- Structure ____________ are positively charged particles
______________ have no charge, but have mass _____________ are
smallest and electrically negative The number of Protons and
Electron ________________ ___________________ is equal to the
number of electrons which is also the proton number
___________________ is the number of neutrons and protons.
- Slide 7
- Electrons and Energy Levels Electrons swarm around the nucleus
of an atom in layers clouds Each cloud has a minimum and maximum
number of electrons it can hold The maximum number of layers is 7
The maximum number of electrons in each level is respectfully inner
to outer: 2, 8, 8, 18, 18, 18, and 18
- Slide 8
- Classifying Atoms Organize the elements by their atoms
Classified by similar __________________ (columns/groups) and
________________________________ (rows/periods) Location will help
you predict how it will react with others in bonding.
- Slide 9
- Slide 10
- Isotopes and Ions Atoms of the same elements with different
masses are isotopes due to a change in the number of
________________. Ions are atoms that have an ______________ number
of protons or electrons
- Slide 11
- Bonding Atoms Atoms bond and create molecules Molecules are the
smallest unit of two or more elements chemically bonded that still
have the same properties of the compound Bonding occurs three ways:
_____________: electrons are shared between the elements that are
bonding _____________: electrons are transferred between the
molecules that are bonding _____________: electrons move freely
around all positive ions
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- Metallic Bonding
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- Mixtures Combination of two or more substances that are NOT
chemically combines
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- HETEROGENOUS Not UNIFORMLY combined Example: SUGAR WATER OIL
AND WATER CHICKEN NOODLE SOUP SAND IN A DESERT SOIL WATER
- Slide 15
- HOMOGENOUS Two or more substances uniformly combined throughout
Also known as a _______________ Examples: SEA WATER COFFEE PERFUME
RUBBING ALCOHOL
- Slide 16
- ALLOY A solution composed of two or more metals Example:
STEEL