The Basics
Ions & Bonding
Properties & Changes
Chemical Reactions
Acids & Bases
100
Elements
What are considered the "Building Blocks of Matter"?
100
What happens to the electrons in an ionic bond
given/taken
100
What type of change is crumpling a piece of paper?
Physical Change
100
In this Reaction which compounds are the reactants? NH3 + H2O --> NH4 + OH Bonus 200 (all numbers should be which type of number?)
NH3 + H2O Bonus: Subscripts
100
What color does litmus paper turn if it is an acid?
red
200
What is a pattern seen in the periodic table?
Possible Answers: Increasing Atom size/mass across and down table More valence electrons across table Grouping of similar elements
200
What is an ion with more than 1 element in it?
Polyatomic
200
What is the change that results in 1 or more new substances?
Chemical
200
What is this specific type of reaction called? Cu2O + C --> Cu + CO2
Single Replacement
200
What is the paper that tells both identifies an acid or bases and determines the strength of the substance
pH paper
300
What is the difference between a compound and a mixture?
Compounds are chemically combined, Mixtures are not
300
What is the oxidation state of Strontium (in Group 2)
+2
300
Which type of change is a change in state (ex solid to liquid)
Physical
300
What is the only type of system that keeps the Law of Conservation of Mass
Closed System
300
What are the general properties of Bases?
Sour taste Slippery Feel Turns litmus paper Blue
400
How has Atomic Theory changed over time?
It has gotten more sophisticated. Started out with a basic shape, now has electron cloud, nucleus with neutrons and protons
400
What is the proper suffix (end of the word) for a negative ion?
-ide also acceptable: -ite or -ate (polyatomic)
400
What does a change in energy indicate?
A Chemical Reaction
400
What causes a hunk of wood to burn more slowly than wood chips?
Surface Area
400
What are the general properties of Acids?
Sour Taste Reacts with Metals & Carbonates Turns Blue litmus paper Red
500
What is the purpose of an electron dot diagram?
To model the number of valence electrons an element has
500
What are the three general properties of ionic compounds?
Crystal Structure High Melting Point Conducts Electricity
500
What is the different between an exothermic and an endothermic reaction?
Exothermic - gives off heat, runs on own after activation energy Endothermic - absorbs heat, needs constant energy input
500
What is the biological catalyst? What does it do for the body?
Enzymes. They reduce the activation energy of reactions
500
What is a reaction between an acid and a base that results in a pH of 7.
Neutralization Reaction
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