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Equation ?'s
Vocab
Periodic Table
Balancing Act
Random
100
A ________ tells chemists at a glance the reactants, products, physical state, and the proportions of each substance present.
What is a chemical equation.
100
The Law of Conservation of Matter states that:
What is Matter cannot be created or destroyed but can be changed.
100
The Alkali Metals family could best be described how?
What is reactive and soft.
100
If a chemical equation is equal on both sides, it is said to be _________.
What is balanced.
100
Which could be evidence of chemical change? A) Melting B) Freezing C) Cutting D) Fizzing
What is D - fizzing.
200
What is the term for the "big" numbers in a chemical equation?
What are the coefficients.
200
A ______ occurs if you put two or more things together and something happens.
What is a reaction.
200
Elements in group 14 tend to gain electrons. If they gain electrons, what type of charge results?
What is a negative charge.
200
If an equation is balanced, then both sides must be:
What is equal.
200
One property of the nonmetals are that they are:
What is poor conductors of heat and electricity.
300
How many MOLECULES of Hydrogen are in the reactants in the following equation? 2H2 + O2 -> 2H20
What are 2 molecules. Remember molecules are represented by the coefficient number. There would be 4 atoms of Hydrogen on the reactant side.
300
______ are the substances that exist before the reaction begins.
What are the reactants.
300
On the periodic table, a period is a:
What is a horizontal row.
300
Of the following chemical equations, which one DOES NOT demonstrate the Law of Conservation of Matter? a) 2K + Cl2 -> 2KCl b) 6Ca + P4 -> 2Ca3P2 c) 3Fe + 2H2O -> Fe3O4 + 2H2 d) 2Fe2O3 -> 4Fe + 3O2
What is C - There should be 2 more oxygen atoms on the reactant (left) side.
300
Elements in the same family have similar:
What are chemical properties.
400
How many ATOMS of Hydrogen are present on the reactants side of this equation? 3Fe + 4H2O -> Fe3O4 + 4H2
What are 8 atoms. Remember, you multiply the coefficient (large numbers on left side of compound/element) by the small low case number after each element. Sorry, there wasn't a way for me to make the subscripts small on this jeopardy game.
400
The substances that form as a result of the reaction are called the _____.
What are the products.
400
Which element can be found in group 4, period 5?
What is Zr.
400
Of the following chemical equations, which one demonstrates the Law of Conservation of Matter? a) Na + Cl2 -> 2NaCl b) 3Mg + P4 -> Mg3P2 c) Fe +H2O -> Fe3O4 + H2 d) 2Al2O3 -> 4Al + 3O2
What is D.
400
Daily Double: Yes or No? Scroll Down for question. Who won the pole for the Daytona 500?
Who is Danica Patrick.
500
How many total elements are involved in this reaction? 3Fe + 4H2O -> Fe3O4 + 4H2
What are 3.
500
What is a molecule? a) a group of two or more atoms that are chemically bonded. b) a single atom c) a mixture of atoms d) another name for an isotope
What is A - a group of two or more atoms that are chemically bonded.
500
Which is the most reactive of the alkali metals? a) Na b) K c) Rb d) Cs
What is Cs. Most reactive have the larger atomic numbers!
500
Based on this equation, how many grams of Iron will be produced in the product? Fe2O3 -> 4Fe + 3O2 20g ? 6g
What are 14g. (20-6 = 14)
500
The atomic weight (mass) of elements is equal to the number of what?
What are protons plus neutrons.