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Friday 2/14 - TES 5.3

Last updated 14 days ago
21 questions
TES 5.3: Chemical Reactions at the Nanoscale
Directions: Using the chart to help you if you need it, match the vocabulary word to the correct definition by writing the letter of the word in the box.

5

Match the vocabulary word with the defintion

Draggable itemCorresponding Item
Matter
matter that is made of only one kind of atom or molecule
Atom
matter that is made of more than one substance
Molecule
the stuff that things are made of
Substance
a tiny piece of matter that is too small to see
Mixture
a group of atoms joined together in a particular way
Did a Chemical Reaction Happen?



Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
1

Ice Melting: Is there evidence of a chemical reaction?

1

What did you notice at the nanoscale?

1

Ice Melting: Is this a chemical reaction? Yes or no and explain why.


Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
1

Paint Mixing: Is there evidence of a chemical reaction?

0

What did you notice at the nanoscale?

1

Paint Mixing: Is this a chemical reaction? Yes or no and explain why.


Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.

1

Baking Soda and Vinegar Mixing: Is there evidence of a chemical reaction?

1

What did you notice at the nanoscale?

1

Baking Soda and Vinegar Mixing Is this a chemical reaction? Yes or no and explain why.

Untitled Section

Modeling Chemical Reactions

We know that during a chemical reaction, new substances and molecules form. But where do the new molecules come from? Let’s find out by modeling the reactions we’ve studied.
Chemical Formula: CH3COOH + NaHCO3 → CH3COONa + CO2 + H2O.

Do this model-->
Baking Soda and Vinegar

Go to the amplify model by clicking this link: https://apps.learning.amplify.com/modelingtool/#/tool/175/level/53_Baking_Soda_and_Vinegar_id_2970
1. Together with your class, use the Baking Soda and Vinegar Model to show which atoms make up the molecules that form after baking soda and vinegar react.

2. Look at the molecule key to see which atoms are in each molecule.
Sodium acetate molecule - 1 sodium atom, 2 carbon atoms, 2 oxygen atoms, 3 hydrogen atoms

Water molecule - 1 oxygen atom, 2 hydrogen atoms

Carbon dioxide - 1 carbon atom, 2 oxygen atoms
Conservation of Matter
Use this diagram / model to answer the questions below:


Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
1

How many Sodium (Na) atoms are there BEFORE the chemical reaction?

1

How many Sodium (Na) atoms are there AFTER the chemical reaction?

1

How many Carbon (C) atoms are there BEFORE the chemical reaction?

1

How many Carbon (C) atoms are there AFTER the chemical reaction?

1

How many Hydrogen (H) atoms are there BEFORE the chemical reaction?

1

How many Hydrogen (H) atoms are there AFTER the chemical reaction?

1

How many Oxygen (O) atoms are there BEFORE the chemical reaction?

1

How many Oxygen (O) atoms are there AFTER the chemical reaction?

0

What do you notice about the number of atoms of each substance (chemical) BEFORE and AFTER the chemical reaction?

Exit Ticket

Exit Ticket

Paint Mixing


Criteria For Success:
  • Look at the molecules before and after the substances mix
  • Identify if a new substance was formed
  • Explain why this is or isn't a chemical reaction
Chemical Reaction - Substances are mixed and at least one new substance with different properties is formed.
0

Was there a chemical reaction? How do you know?

0

Do any atoms appear or disappear during a chemical reaction? How do you know?