Download presentation
Presentation is loading. Please wait.
1
Chemical Reactions Quiz
2
Q1: What temperature water would increases the number of molecular collisions?
A: Hot Water
3
Q 2: What were some indicators of the reaction in the MgO lab?
A: Bright light, smoke, corrosion, white color of MgO
4
Q 3: Photosynthesis happens when plants convert energy from the sun into ________ energy in the Glucose. A: chemical (use the two skateboards & p
5
Q 4: An exothermic reaction is when chemical bonds ________ energy, so it gives off heat.
A: Release
6
Q 5: Endothermic reactions are when new chemical bonds absorb heat energy, so the surroundings get _______. A: Colder
7
Q 6: Reactants or Products are the molecules going in to a reaction?
A: Reactants Product
8
A: carbon dioxide and water.
Q 7: When you light a candle, the wick oxidizes (combusts) producing heat, light, carbon dioxide and water. What are the products? A: carbon dioxide and water.
9
A: Created or destroyed
Q 8: The law of conservation of matter states that matter cannot be ________ or __________ in a chemical reaction. A: Created or destroyed
10
Q 9: Does temperature increase or decrease in an exothermic reaction?
A: Increase
11
Q 10: In the Transparent Gas lab, how did we test for carbon dioxide?
A: checked to see if it would put out a flame
12
Q 11: List 4 ways to speed up a chemical reaction:
A: Add heat, stirring/shaking, increase surface area, increase concentration
13
Q 12: List three general indicators that a chemical reaction has happened? Think about what you have observed in your labs A: Light, Fizzing, Change of temperature, New smell, New color, Rust, Fire (explosion), etc…
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.