Before you even drink it you can tell from the smell that the milk has soured.

As you are walking back to the kitchen, you notice that some of your plants are dying and beginning to decay and that some saltwater has evaporated out of your fish tank. You make a mental note to take care of both after school.

As you are walking back to the kitchen, you notice that some of your plants are dying and beginning to decay and that some saltwater has evaporated out of your fish tank. You make a mental note to take care of both after school.

You go back to get your ice water but find that the ice has melted.

Then you hear glass breaking. (What kind of crazy day is this?!)

You go back to the apple, but it has turned brown.

You think about dying your hair purple but then remember how your parents reacted when your sister did that.

___ BaCl₂ + ___ KIO₃ → ___ Ba(IO₃)₂ + ___ 2KCl

___ Na + ___ MgF₂ → ___ NaF + ___ Mg

___ C₅H₁₂ + ___ O₂ → ___ CO₂ + ___ H₂O

___ NaCl → ___ Na + ___ Cl₂

___ K + ___ Cl₂ → ___ KCl

4 Fe + 3O₂ → 2 Fe₂O₃

2 Mg + O₂ → 2MgO

Balance this equation _____ Na + _____ HCl → _____ NaCl + _____ H2

In this type of reaction, energy is transferred from the reaction system to the surroundings, LOTS of energy is released when new bonds form and the temperature of the reaction goes up.

In this type of reaction, energy is absorbed by the reaction system from the surroundings, LOTS of energy is being used for b r e a k i n g bonds and the temperature of the reaction drops.

The following are examples of _____ reaction - fireworks, hand warmers, and burning rocket fuel.

The following are examples of _____ reaction - the cooking process, cold packs, mints feeling cool on your tongue.

A substance formed by a chemical reaction

Substances present at the beginning of a chemical reaction

States that matter cannot be created nor destroyed

An increase or decrease in energy during a chemical reaction

A lack of order or predictability