Energy and Matter Two column notes.
1. Energy is the ability to do work or cause
change. Examples
Energy and Matter Two column notes.
2. Like matter, Energy is never created or
destroyed in chemical reactions.
Energy and Matter Two column notes.
3. Energy can only be transformed – that is,
changed from one form to another.
Examples?
Energy and Matter Two column notes.
3. Energy can only be transformed – that is,
changed from one form to another.
Examples?
Energy and Matter Two column notes.
How do you know when something has
energy?
What are some examples of things with
energy?
Remember energy is the ability to cause
change.
Energy and Matter Two column notes.
4. Forms of energy are related to changes in
matter include thermal energy, chemical
energy, electromagnetic energy, and electrical
energy.
Energy and Matter Two column notes.
5. Temperature is the average energy of
random motion of particles of matter.
Cold vs. Warm Air?
Energy and Matter Two column notes.
6. Thermal energy is the total energy of all of
the particles in an object.
Energy and Matter Two column notes.
6. Thermal energy is the total energy of all of
the particles in an object.
Temperature and thermal energy are not the
same. A bigger object at 70 degrees can have
more thermal energy than a smaller object at
80 degrees.
Energy and Matter Two column notes.
7. Thermal energy always flows from warmer
matter to cooler matter.
There is no such thing as cold.
Matter can have more or less thermal energy.
Energy and Matter Two column notes.
7. Thermal energy always flows from warmer
matter to cooler matter.
There is no such thing as cold.
Matter can have more or less thermal energy.
Cold is the absence of thermal energy, so
there is no such thing as cold.
Energy and Matter Two column notes.
8. An endothermic change takes energy in.
Ice melting is an endothermic change.
Energy and Matter Two column notes.
9. An exothermic change releases energy.
Combustion is an exothermic change.
Energy and Matter Two column notes.
9. An exothermic change releases energy.
Combustion is an exothermic change.
Energy and Matter Two column notes.
10. Chemical energy is the energy stored in
the bonds between atoms.
Energy and Matter Two column notes.
10. Chemical energy is the energy stored in
the bonds between atoms.
When a chemical change occurs, chemical
bonds are broken and new bonds are formed.
Energy and Matter Two column notes.
11. Chemical changes usually involve
transformations between chemical energy and
thermal energy.
Energy and Matter Two column notes.
12. Electromagnetic energy like sunlight can
increase the thermal energy of matter.
Energy and Matter Two column notes.
12. Electromagnetic energy like sunlight can
increase the thermal energy of matter.
Radio waves, infrared rays, microwaves,
ultraviolet rays, and X-rays are other types of
electromagnetic energy.
Energy and Matter Two column notes.
13. Chemical changes can give off
electromagnetic energy, such as combustion.
Energy and Matter Two column notes.
13. Chemical changes can give off
electromagnetic energy, such as combustion.
Energy and Matter Two column notes.
14. Electrical energy is the energy of
electrically charged particles moving from one
place to another.
Energy and Matter Two column notes.
14. Electrical energy is the energy of
electrically charged particles moving from one
place to another.
Electrons move from one atom to another in
many chemical changes.
Energy and Matter Two column notes.
14. Electrical energy is the energy of
electrically charged particles moving from one
place to another.
Electrons move from one atom to another in
many chemical changes.
Energy and Matter Two column notes.
15. Some chemical reactions can be made to
happen by applying electricity. Electrodes are
metal parts that transfer electricity to and
from matter.
http://www.middleschoolchemistry.com/multi
media/chapter1/lesson3
Ions
http://www.brainpop.com/science/matterandche
mistry/ions/
Chemical Bonds
http://www.brainpop.com/science/matterandche
mistry/chemicalbonds/
Element Families
Alkali Metals
Alkaline Earth Metals
Transition Metals
Carbon Family
Nitrogen Family
Oxygen Family
Halogens
Inert Gases
Find the following:
1. Family Name
2. Group number or
numbers?
3. How electrons are
involved in reactions?
4. Reactivity comparison?
5. Physical properties and
description?
6. Examples, importance,
and uses?