HMH Unit 2.3 Pgs 136-138
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Science
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5th Grade
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Standards-aligned
Ambrea Hendrickson
Used 3+ times
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10 Slides • 5 Questions
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HMH Unit 2.3
Pgs 136-138
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Chemical Changes
THE BEFORE AND THE AFTER ARE DIFFERENT!!!
During a chemical change, new matter is formed.
There are many different ways to see a chemical change.
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Chemical Changes
Gases are released
Color changes
Temperature change
Makes light
Change is volume
Change in taste or smell
Makes a precipitate
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Chemical Changes
Burning things are a great example of a chemical change.
When something burns, energy is released in the form of heat.
The burning substance changes into something new as heat is released.
The buring substance changes into something new as heat is realeased.
Think of the pile of ashes at the end of a fire. You can't turn them back into wood.
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Multiple Select
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Multiple Select
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Epsom Salt and Ammonia
Chemical changes can be dangerous.
When you mix epsom salt and ammonia together, they create a chemical change.
Ammonia is dangerous; the amounts used in labs can irritate your skin, eyes, throat, and lungs.
This is why the lab needs to be done in a well ventilated area.
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Rusting and Rotting
Have you ever seen a rusty metal car? Rusting is another example of a chemical change.
If metals are not protected and they get wet, they may start to rust.
The water causes the metal to develop a reddish-brown color.
Over time, the spot where the rust forms will "eat away" at the car.
This will form a hole. The rust will spread, and the entire metal car will fall apart.
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Multiple Select
Describe the appearance of the car and the environment it’s in. Select all that apply.
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Multiple Select
Describe the appearance of the car and the environment it’s in. Select all that apply.
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Open Ended
What has happened to the car ? Use complete sentences.
HMH Unit 2.3
Pgs 136-138
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