Balancing
Classifying
General Knowledge
Energy
Reaction Rate
100
Mass is not lost or created during a chemical change.
What is The Law of Conservation of Mass?
100
Products are ALWAYS CO2 + H2O.
What is Combustion?
100
A change in a substance that only affects its physical properties.
What is a physical change?
100
All chemical reactions either ______ or _______ energy.
What is release or absorb?
100
Why do reaction rates occur faster?
Due to increased particle collisions.
200
A chemical equation has the same number of atoms of each element on each side of the equation.
What is a balanced equation?
200
Ni + AgNO₃
What is single replacement?
200
Each substance to the right of the arrow in a chemical equation.
What is a Product?
200
When a wood fire burns, it releases heat into the environment.
What is exothermic?
200
Which tablet will have a faster reaction rate?
The crushed tablet (the one on the right)
300
To balance a chemical equation, it may be necessary to adjust the?
Coefficients
300
NaOH + HCl --> NaCl + H2O
What is Double Replacement?
300
The symbol (s) written after a formula in a chemical equation stands for?
Solid
300
Energy must be added to a chemical reaction for the reaction to take place.
What is endergonic?
300
Why does an increase in temperature result in an increase in reaction rate?
It causes an increase in the number of particle collisions.
400
____NaCl + ____KOH 🡪 ____NaOH + ____KCl
Already Balanced
400
Zn + Cl₂ →
What is synthesis?
400
The numbers that go before symbols and formulas in a chemical equation.
What is a Coefficient?
400
The difference between endothermic and exothermic chemical reactions.
Endo = takes IN energy as heat
Exo = releases OUT energy as heat
400
Substances that speed up chemical reactions.
What is a Catalysts?
500
____Ca(OH)2 + ____H3PO4 🡪 ____Ca3(PO4)2 + ____H2O
3, 2, __, 6
500
Al₂O₃ →
What is decomposition?
500
The symbol that means dissolved in water.
What is (aq)?
500
Energy can be released as what four things?
- Light
- Heat
- Sound
-Electricity
500
The five main factors that affect the rate of a chemical reaction.
What are temperature, concentration, surface area, catalysts, and pressure?