gizmos collision theory answer key 2020 scored a collision theory vocabulary activated complex catalyst chemical reaction concentration enzyme half life molecule product reactant
Vocabulary: activated complex, catalyst, chemical reaction, concentration, enzyme, half-life,
molecule, product, reactant, surface area
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. Suppose you added a spoonful of sugar to hot water and another to ice-cold water. Which
The hot water
type of water will cause the sugar to dissolve more quickly? _________________________
2. Suppose you held a lighted match to a solid hunk of wood and another match to a pile of
The shavings
wood shavings. Which form of wood will catch fire more easily? ______________________
Gizmo Warm-up
A chemical reaction causes the chemical compositions of
substances to change. Reactants are substances that enter
into a reaction, and products are substances produced by
the reaction. The Collision Theory Gizmo allows you to
experiment with several factors that affect the rate at
which reactants are transformed into products in a
chemical reaction.
You will need blue, green, and orange markers or colored
pencils for the first part of this activity.
1. Look at the key at the bottom of the SIMULATION pane. In the space below, draw the two
reactants and two products of this chemical reaction.
Reactants: Products:
A. A.
B. B.
2. Click Play ( ). What do you see?
Reactant A bounces around bumping into
____________________________________________
Reactant B which is on the right side vibrating against the side. When Reactant
A succeeds in breaking the bonds of Reactant B the orange substance on
Reactant B breaks off and bonds with Reactant A forming Product B, leaving the
two green substance molecules which are Product A
2019
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