Transcript Chemistry Project

Chemistry Project
By: Diana Salinas 71o
What is matter?
A) An object that take up space and has mass
B) The color of the object
C) The mixtures
Answer A
States of Matter
Solid
Liquid
1. Has definite shape
1. Atoms move alittle
2. Has definite volume
more freely
3. Atoms are packed tightly 2. Water
4.Particles vibrate
3. Atoms move
5. It is hard
differently depending on
khjj
temperature.
States of Matter
Liquid
4. Takes the shape of a container
5. definite volume
Gas
1.Takes up whole volume
2. Particles get excited and move farther and farther
3. Definite shape
4. cannot see a gas
5.carbon dioxide
Physical and Chemical
Properties
Physical Properties- Is without changing the makeup of a
substance you can also observe or measure it. Examples: color,
smell, freezing point, boiling point, and melting point.
Chemical Properties-Is when the properties of an object have a
reaction. Examples: Hydrogen balloon, burning steel wool, alka
seltzer, Zinc, Iodine reactions.
What is the difference between them?
The difference between them is that physical you check the shape,
temperature,weight, etc.... With chemical you cannot observe
checking the 5 senses .
Physical and Chemical
Properties
What is the difference between them?
The difference between them is that physical
you check the shape, temperature,weight,
etc.... With chemical you cannot observe
checking the 5 senses
Physical and Chemical Changes
Physical Change- Is a change that does not produce
(make) a new substance. Example: stirring an egg,
painting wood, cutting bread, water, glass
breaking.
Chemical Change- Are changes that result in the
productions of another substance. Example:
burning paper, digesting food, baking a cake,
fireworks, good car rusting.
What is the difference between them?
Physical Change does not make a new substance, but
Atom
What is an Atom?
It is the smallest part of matter.
An Atom has 3 different parts
-Protron- positive charge
-Electron- negative charge
-Neutron- neutrally charged
Atom model
electrons (-)
neutron (O)
proton(+) nucleus
Element
What is an Element?
is a pure substance that cannot be broken down into
any simpler substances by chemical methods.
Example: 1
2
carbon - element
Dubnium - element
6
- atomic #
105
- atomic #
C
- symbol
Db
- symbol
12.o11 - atomic mass 262
- atomic mass
Element
Example: 3
4
Oxygen - element
Nitrogen - element
8
- atomic #
7
- atomic #
O
- symbol
N
- symbol
15.999 - atomic mass 14.007 - atomic mass
Example: 5
Aluminum - element
13
- atomic #
Al
- symbol
Compound
What is a Compound?
A thing that is composed of 2 or more separated
elements.
Examples:Salt
Barite
Copper
Tin
Wood
Steel
Aluminum
Hematite
Plastic
Cotton
Periodic Table
What is a Periodic Table?
-The periodic table is a table of the chemical elements in which
the elements are arranged by order of atomic number in such a
way that the periodic properties of the elements are made clear.
How are they used?
They are used to quickly locate information of that certain
element.
What is the pattern?
The arrangement of all elements are in order to increase atomic #.
Substance and Mixtures
Substance- A material with a definite chemical
composition.
Mixtures- A material with a definite physical
composition.
What is the difference between them?
The difference between them is that with substance they cannot
be broken down physically, also a mixture cannot be broken do
chemically.
Heterogeneous and
Homogeneous
What is the difference between them?
Heterogeneous and homogeneous refer to mixtures of
materials in chemistry. The difference between
heterogeneous and homogeneous mixtures is the
degree at which the materials are mixed together.
Heterogeneous Ex:
Homogeneous Ex:
- sand
- blood
- salt
- glass of juice
- tea
- mixture of alcohol and water
- soda
- hard wine
- milk
- alcohol
Solutions
What is a Solution?
A solution is a homogeneous mixture of one or more solutes
dissolved in a solvent.
examples:
- salt in water
- tea
- sugar in coffee
- sugar in water
- coffee
Solute- The substance that dissolves in a solvent to produce a
homogeneous mixture
Solvent- The substance in which a solute dissolves to produce a
homogeneous mixture
Examples
Solute examples-chromium
-iodine
-eggshells
-glue
-nail polish
Solvent examples- salt
-water
Solubility
What does Solubility mean?
The quantity of a particular substance that can dissolve in a
particular solvent.