Show:
Signs of a Chemical Reaction
Chemical Bonds
Chemical Formulas
Chemical Equations
WILD CARD
100
Don't spill chlorine bleach on your clothes, it will cause this sign of a chemical reaction...
What is a color change?
100
A force that holds two atoms together in a molecule.
What is a chemical bond?
100
In the following chemical formula, C6H12O6, there are ___ atoms of Hydrogen.
What is 12 atoms of Hydrogen?
100
In the chemical equation, 3Mg + N2 --> Mg3N2, the reactant side of the equation consists of ....
What is 3Mg + N2?
100
These leaves represent this sign of chemical reaction
What is a color change?
200
When dropping an Alka-Seltzer tablet into water it fizzes and bubbles, a pure sign of the formation of...
What is gas? (gas formation)
200
In order for new substances to be formed during a chemical reaction, the original chemical bonds must ___.
What is break?
200
Nitrogen dioxide has 1 Nitrogen atom and 2 oxygen atoms, write the chemical formula for nitrogen dioxide.
What is NO2?
200
In the chemical equation, N2 + 3H2 --> 2NH3, the product consists of ....
What is 2NH3?
200
Site the evidence of a chemical reaction taken place in the following photo
What is the formation of gas and light?
300
Chunks that form in spoiled milk are an example of ___ (another sign of a chemical reaction)
What is solid formation?
300
New bonds form new substances. These substances have different/same properties from the original substances. (choose 1)
What is different properties from the original substances?
300
Covalent compounds (composed of 2 nonmetals) use prefixes, write the chemical formula for phosphorus pentachloride.
What is PCl5?
300
The law of conservation of mass states...
What is that mass cannot be created or destroyed in a chemical reaction?
300
The reactant side of the chemical equation pictured states:
What is NO2?
400
A campfire has several examples of chemical reactions taken place, most notably is the energy change. There are 2 energy changes that take place, name them.
What is light energy and thermal energy?
400
Charcoal burning in a grill is a chemical change because...
What is new substances are formed in the process?
400
An ionic compound (between a metal and nonmetal) has a charge of ___.
What is zero?
400
Balance the following equation, Na + Cl2--> NaCl
What is 2Na +Cl2--> 2NaCl?
400
Create a chemical formula, and name for the following molecule
What is CO2, carbon dioxide?
500
This is a solid produced as a result of a chemical reaction in solution.
What is a precipitate?
500
Steam, a gas, is escaping from a teapot. Explain how this is a physical OR chemical change.
What is steam is a physical change because it is still a water molecule? No bonds are broken or created when a water changes phase. (from liquid to a gas)
500
Sulfur trioxide is a covalent compound. There are ___ atoms of oxygen in a molecule of sulfur trioxide.
What is 3 atoms of oxygen?
500
Create a balanced equation for the following , Al +CuSO4 -->Al2(SO4)3 +Cu
What is 2Al + 3CuSO4 --> Al2(SO4)3 + 3Cu?
500
Create the chemical formula for caffeine:
What is C8H10N4O2?