Real World Application: Chemical vs. Physical Changes

Real World Application: Chemical vs. Physical Changes

Presentation and Application Assessment

Mastery Activity:

On the NEXT Slide there will be about a 7 to 8 minute complete breakdown of physical and chemical changes (VIDEO). Watch the Video and take notes it is a youtube video. I like it because it ends in examples.

Multiple Choice

A mixture is the result of a physical change because...

• The parts can be separated
• A new substance is made
• There is a chemical reaction
• One part of the mixture disappears

Multiple Choice

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties

Multiple Choice

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Multiple Choice

Change in color is a physical change.

• True
• False

Multiple Choice

Freezing Juice?

• Physical Change
• Chemical Change

Multiple Choice

Which of the following is NOT an example of a physical change?

• crumpled paper
• pencil sharpening
• shrunken clothing
• rust

Multiple Choice

A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?

• Texture
• Temperature
  
• Shape
•  Mass

Multiple Choice

Is melting butter for popcorn a chemical or physical change?

• chemical
• physical

Multiple Choice

a piece of copper is cut in half

• physical change
• chemical change

Multiple Choice

fireworks explode

• physical change
• chemical change

Multiple Choice

ethyl alcohol boils at 79⁰C

• physical change
• chemical change

Multiple Choice

water absorbed by a paper towel

• physical change
• chemical change

Mastery Activity#2- PRESENTATION with Check IN Questions

On the NEXT Couple of slides, there is a presentation that will allow you to take any notes THAT YOU FEEL ARE IMPORTANT (In case you don't know what is important. ?? How did you do on the 10 questions Quiz after the VIDEO??? Whatever was tough, maybe the areas you want to focus on.)

Multiple Choice

Shredding a piece of paper

• Chemical Change
• Physical Change

Multiple Choice

Water freezing

• Chemical Change
• Physical Change

Multiple Choice

Glass bottle that is shattered

• Chemical Change
• Physical Change

Multiple Choice

Change in color, release of smell or light, and giving off heat are indicators of ___

• a nuclear change
• a physical change
• a chemical change
• a state change

Multiple Choice

Which of these is NOT an indicator of a chemical change?

• a change in color
• giving off or taking in of heat
• the release of gases
• a change in shape

Multiple Choice

In a chemical change,  particles that make up two or more substances are rearranged to ___

• form a mixture
• form a new substance
• mix into a solid
• mix into a solution

FINAL ASSESSMENT/ REVIEW: HOW WELL DO I REALLY UNDERSTAND?

• You will see much harder questions now- I hope you are ready and took notes.

• HINT- If you get it wrong you may want to take notes on it- Copy the question and the answer- ASK us to break it down in CLASS

• ARE YOU READY TO ROCK??????

Multiple Choice

Which is not a clue that could indicate a chemical change?

• Change in color

• Change in shape

• Change in energy

• Change in odor

Multiple Choice

Which is an example of chemical change?

• Water freezes

• Wood is cut

• Bread is baked

• Wire is bent

Multiple Choice

Which is an example of a physical change?

• Metal rusting

• Silver tarnishing

• Water boiling

• Paper burning

Multiple Choice

When a new substance is formed with different properties than the original substance it is called a

• Chemical change

• Physical change

• Freezing

• Boiling

Multiple Choice

Sublimation is a

• chemical change

• physical change

Multiple Choice

Under normal conditions ice melts at 0⁰C. Which of following describes this change?

• physical change, heat is released

• chemical change, heat is released

• physical change, heat is absorbed

• chemical change, heat is absorbed

Multiple Choice

Is sharpening a pencil a physical or chemical change?

• Physical 
• Chemical

Multiple Choice

Is making orange juice a physical or chemical change?

• Physical 
• Chemical

Multiple Choice

Which of these does NOT happen during a chemical change?

• Atomic bonds are formed or break apart
• New substance(s) are formed with different chemical properties
• The number of atoms in the reaction stays the same
• The chemical properties of the beginning substance(s) are the same as those of the end product(s)

Multiple Choice

A mixture is the result of a physical change because...

• The parts can be separated
• A new substance is made
• There is a chemical reaction
• One part of the mixture disappears

Multiple Choice

Properties that can be observed without changing the identity of the substance.

• Physical
• Chemical

Multiple Choice

Example of a physical property

• magnetism
• reactivity with oxygen
• flammability
• non-reactive

Multiple Choice

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties

Multiple Choice

The spoiling of milk is an example of which type of change?

• Physical

• Chemical

• Both

• Neither

Multiple Choice

Why is this a physical change?

• It makes a mess

• Same gas before and after

• It changes form

• It's not, it's a chemical change

Multiple Choice

Changes between states of matter are often which?

• Chemical changes

• Physical changes

• Both

• Neither

Multiple Choice

Gallium spoon melting is a physical change because a puddle of ___________ metal is left afterwards.

• Iron

• Steel

• Aluminum

• Gallium

Multiple Choice

Which of these is true of fruits blended together?

• Chemical Change

• Physical Change

• Both types of changes

• None of these

Poll

When it comes to being able to explain and Really identify real world examples of Physical and Chemical Changes, What level do you rate yourself? (BE HONEST- We will check and ask you later?)

• 4 - I am really, really good at the this concept. I can probably teach other students.

• 3- I get it, and I know the difference. I might get something wrong , but I don't need the teachers to really help me

• 2-I am still so, so. I probably need more practice to get much better.

• 1- I am so LOST. I do not get it at all. I probably need ONE on ONE help from my teacher