Goals Determine and understand the types of energy in this system. Follow the scientific method. Determine under which conditions that glow stick is brighter,

Slides:

Advertisements

Similar presentations

Chemical Reactions and Equations

Advertisements

By Katherine Wood. A glow stick is a sealed, plastic tube that contains two types of chemicals, hydrogen peroxide and diphenyl oxalate, which are separated.

Forms of Energy. Ability to do work or cause change Produces Warmth Produces Light Produces Sound Produces Movement Produces Growth Powers Technology.

Forms of Energy 1. All energy falls into two categories:

ENERGY Physical Science Unit.

By Casj and Macs. Research:  Glow sticks only last certain amount of time in room temperature. It has been said that glow sticks glow brighter when heated.

Energy Forms and Transformations The term energy describes the capacity to produce changes within a system. There aren’t different “types” of energy. Energy.

Do Now Tape in “Vocabulary for Quiz 11” onto the next open page of your comp. book.

Types of energy Solar energy, Heat energy, Gravitational energy, Kinetic energy, and Chemical energy. Solar energy is radiant energy that travels from.

Review: States of Matter, Thermal Energy & Energy Transfer.

 Energy is the ability to do work or cause change.  It can change the temperature, shape, speed, or direction of an object.

Move It, Move It!!!! Forms of Energy. Mechanical Energy Energy of movement(can be in a potential or kinetic state)

Catalyst What is potential energy? What is kinetic energy? Give an example of each.

Starters for Week of Oct 12 – Oct 16 Name 6 simple machines W Name 2 classes of energy Th Calories per serving F – What does the.

Chapter5-3: Controlling Chemical Reactions Where does the energy come from to begin to light the match?

78 Kinetic and Potential Energy Practice: Notes: Glue here when done /27/2015 Starter: What do you think kinetic and potential energy have to do.

 1. Energy is the ability to cause change. Joules are used to measure energy.

Matter in Motion The molecules that make up matter are in constant motion. These molecules have kinetic energy.

Energy and Motion Kinetic and Potential Energy. Energy We use the idea of energy in many ways in everyday life. - When fuel supplies run low we have an.

Identify all the forms of energy you see in the picture below.

WHAT IS ENERGY?.

Chapter 5: Energy Vocabulary

Ch. 4 Types of Energy.

Forms of Energy.

Forms of Energy.

Phase Changes What is Kinetic Theory of Matter?

Reactions Day 3.

Energy…Let’s go to work

Starter, quick practical

What is an example of potential energy?

Identify all the forms of energy you see in the picture below.

Why Phase Change Occurs

Forms of Energy.

Review What is potential energy? What is kinetic energy?

Energy Foldable.

Forms of Energy.

Forms of Energy.

Catalyst What is potential energy? What is kinetic energy?

What are other types of energy?

THERMAL ENERGY HEAT AS ENERGY.

Forms of energy.

Energy & Reactions.

Heat and Endothermic and Exothermic Reactions

Energy Foldable.

Catalyst What is potential energy? What is kinetic energy?

Let’s Organize Information into a Foldable!

Section 16 Thermal Energy.

Day 3: Forms of Energy.

Forms of Energy.

TYPES OF ENERGY NOTES Potential, Kinetic, Mechanical, Sound, Thermal (Heat), Light, Nuclear, Electrical.

Forms of energy (a) Radiant energy (b) Thermal energy

Energy stores Energy transfers

Lesson 6-1 Energy and Power Technologies

Energy and the Transfer of Heat

Kinetics and Equlibrium

Phase Changes Thursday, August 25th

Learning Target 3.1 – Define Energy & Describe the Various Forms

Forms of Energy.

The Science of energy.

What is Energy?.

Energy and the Transfer of Heat

What is Energy?.

Forms of energy.

Forms of Energy.

Types of Energy All energy falls into two categories:

Forms of Energy All energy falls into two categories:

Energy Kinetic and Potential.

Presentation transcript:

Goals Determine and understand the types of energy in this system. Follow the scientific method. Determine under which conditions that glow stick is brighter, lasts the longest and why.

Energy Energy can never be ___________ or ____________ Energy changes from one form to another! 1. Gravitational potential 2. Elastic 3. Chemical potential 4. Radiant 5. Thermal 6. Kinetic (motion) 7. Sound

What’s In a glow stick?

Before the Experiment What type of energy in an unbroken glow stick? 1. Gravitational potential 2. Elastic 3. Chemical potential 4. Radiant 5. Thermal 6. Kinetic (motion) 7. Sound

Hypothesis What do you think will happen? In what condition will the light will be the brightest or dimmest? In what condition will the light last the longest?

Methods 1. Break the glow sticks 2. Shake the glow sticks 3. Stick one each of the different water temperature Ice water Room-temperature water Hot water 4. Wait 1-2 minutes and record what you see in the table!

Data Glow StickObservations: What Do You See? Brightness Rank (1-3)*** Ice Water Room Temperature Hot Water

Results: After the Experiment What type of energy in a glowing glow stick? 1. Gravitational potential 2. Elastic 3. Chemical potential 4. Radiant 5. Thermal 6. Kinetic (motion) 7. Sound

Results: After the Experiment What type of energy is shown in the different water temperatures? 1. Gravitational potential 2. Elastic 3. Chemical potential 4. Radiant 5. Thermal 6. Kinetic (motion) 7. Sound

Class Demonstration Is the glow stick liquid in the ice water still glowing? Is the glow stick liquid in the hot water still glowing?

Theory The chemicals reacted  formed new chemicals. These chemicals do not need as much energy to hold their molecules together, so they release that extra energy as light.

Forming new chemicals and new bonds!

Theory When you put the glow stick in cold water, the cold water absorbed some of the thermal energy from the glow stick, so the reaction slowed down and the glow stick wasn’t as bright. Heat

Theory When placed in hot water, the chemicals in the glow stick absorbed the thermal energy from the hot water. The added energy made the chemicals react faster and produce more light. Heat

Conclusions 1. Describe how the energy changes types? Hint: Chemical, Thermal and Radiant Energy 2. In the experiment that you performed, how does temperature affect the brightness at the beginning? Sentence starter: As the temperature increases, the brightness… 3. In our class model system, how does temperature affect brightness after a long time? Sentence starter: As the temperature increases, the brightness… 4. Why does a reaction happen faster? Hint: Remember C-D-D and W-E-E?