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Learn about chemical reactions, balancing equations, types of reactions, and states of matter in this comprehensive guide. Discover how to prove a chemical reaction has occurred, the symbols used in reactions, and the importance of observation. Find out about the fundamental law demonstrated in balancing equations and explore various types of reactions. Understand the role of solubility in reactions and learn about single replacement and double replacement reactions. Learn about the state of matter notation and the significance of combustion reactions.
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Chemical Reactions
Reaction/ No Reaction?
Types of Reactions
States of Matter
Miscel- laneous
Chemical Reactions Balancing Reaction/ No Reaction? Types of Reactions Sates of Matter Misc $100 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 $500
How do you prove a chemical reaction has occurred?
Name 5 observations that suggest a chemical reaction has occurred
Change in color, odor, formation of a precipitate, release of energy, gas, light
Which type of reaction always gives off energy
What symbols would you use to indicate the following: a) heated to 100C b) Palladium as a catalyst c) reversible reaction d) heat needed Write ans on board.
a) 100C over arrow b) Pd over arrow c) 2 opposing arrows d) heat or triangle over arrow
Which 2 of the following dissolves in water? a) AlBr3 b) BiI3 c) CaCO3 d) FeBr2
a) AlBr3 d) FeBr2
How many molecules of oxygen are in this reaction? 4Al + 3O2 --> 2Al2O3
What fundamental law is demonstrated in balancing equations?
The Law of Conser- vation of Mass
Balance this reaction: ZnS + O2 --> ZnO + SO2 (30 seconds)
How many atoms are present in Sr3(PO4)2?
Why can't you change the subscript when balancing equations?
It changes the identity of the substance
Name 4 elements that will replace strontium in a single replacement reaction.
Li, Na, K, Rb, Ba
What must appear for a double replacement reaction to occur?
A precipitate, gas, or water
Will this reaction occur? FeS(aq) + Ni(s) ---> Explain your answer.
No, nickel is lower on the activity series than iron.
Will a reaction occur between aluminum bromide and barium chloride? Use solubility chart. Explain your answer.
No b/c no precipatate is formed, all products are still dissolved
Where might Cesium appear in the activity series, based on it's location on the periodic table?
Near rubidium; near the top
Which type of reaction produces two pure elements?
Which type of reaction requires use of an activity series?
Single replacement
What state of matter do you write when there's an "S" on the solubility chart?
What reaction always produces H2O and CO2?
Which 2 types of reactions can have oxygen as a reactant?
Combustion & Synthesis
What is the state of a pure ionic compound at room temperature?