9.1.D Intro Notes of Chemical Reactions

Poll

Survey (doesn't count against score)

Which of the following statements do you think are true? Click on all that apply.

• A chemical reaction will always produce all four signs: a temperature change, a gas, a color change, and a precipitate.

• Chemical reactions are always irreversible.

• Chemical reactions require heat to begin.

• All chemical reactions produce heat.

• Matter can disappear in a chemical reaction, especially in a reaction that produces a gas.

On your 9.1 notes handout, you will use the next slide's video to fill out the table​. What signs indicate a chemical change occurred? What signs indicate matter is conserved?

Conservation of Mass/Energy Video

Use the next slides to learn/review about chemical reactions and how equations are used to represent the chemical change.

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Chemical Equations

Open Ended

What pattern do you notice that relates the ball model to the quantity of elements in the chemical formulas?

If needed, use the magnifier to look at the image.

​Watch video, then answer questions about the model on the next slide.

Draw

Draw a chemical equation for the ball model. Include correct subscripts and coefficients.

Key: Black = Carbon, White = Hydrogen, Red = Oxygen

Labeling

Drag the labels to the best location on the image. Write the correct labels onto your notes page.

Drag labels to their correct position on the image

Chemical Formula

Yield

States of Matter

Subscript

Products

Coefficient

Reactants

Categorize

Options (9)

Hydrogen Molecules

Oxygen Molecule

Water Molecules

(g)

(l)

+

-->

Coefficients

Subscripts

Organize the information into their correct categories.

Reactants

Products

Symbols

Accounting tools of atoms