Mixtures and Solutions
This type of mixture appears uniform throughout.
Homogeneous mixture
Cutting, melting, bending, and crushing are examples of this type of change.
Physical change
This is the minimum amount of energy needed to start a chemical reaction.
Activation Energy
In this type of reaction, two or more substances combine to form a more complex substance.
Synthesis
These are the substances you start with in a chemical equation.
Reactants
This type of mixture is not uniform throughout and may have visibly different parts.
Heterogeneous mixture
This type of change produces one or more new substances.
Chemical Change
This speeds up a chemical reaction and lowers activation energy.
In this type of reaction, a compound breaks down and forms simpler products.
Decomposition
These are the substances you end with in a chemical equation.
Products
Paint, milk, and fog are examples of this type of mixture.
Colloid
Rust forming is an example of this type of change.
Chemical change
This type of reaction releases energy, can release energy as heat, and can leave the surroundings feeling warm.
Exothermic reaction
In this type of reaction, one element replaces another in a compound, or elements switch places.
Replacement
The arrow in a chemical equation means these two phrases.
"Yields" or "reacts to form"
This type of heterogeneous mixture contains large, visible particles that can separate when left undisturbed.
Suspension
Matter can enter or escape from this type of system.
Open system
Name three of the five factors that can affect the rate of a chemical reaction.
Classify this reaction:
2Mg + O₂ → 2MgO
Synthesis
This law states that matter is neither created nor destroyed.
Law of Conservation of Mass
In lemonade, identify the solution, solvent, and solute.
Solution - lemonade drink
solvent - water
solute - lemonade mix
Matter cannot enter or escape from this type of system.
Closed system
This type of reaction may need a continuous source of energy and can leave the surroundings feeling cold.
Endothermic reaction
Classify this reaction:
2KClO₃ → 2KCl + 3O₂
Decomposition
Look at the equation:
Mg + O₂ → MgO
Which atoms are not balanced?
Oxygen Atoms