Chemistry Ch. 2 Notes Outline and Key Concepts Name

1. I understand the differences, and the connections between Energy and Matter 2. I can apply the Laws of Conservation to real world scenarios, and predict and interpret their results. 3. I can identify the 5 phases of matter, and describe how the motion of their particles results in their properties 4. I can identify and differentiate between elements, compounds, homogeneous mixtures and heterogeneous mixtures. 5. I can recognize the difference between chemical and physical changes and properties 6. I can perform calculations that support the Laws of Conservation, including percent composition.

Define matter.

What is the Law of Conservation of Matter?

What is the Law of Conservation of Energy?

Are there any “exceptions” to the rule? Be specific.

KC #2 Explain why all samples of a given substance have the same intensive properties.

KC# 3 What are the five (5) phases of matter? Include their motion of molecules, how much relative Energy they have, and relate absolute zero to the proper phase, including its temperature.

What does it mean to be a pure substance?

What is an element? Give an example

What is a compound? Give an example

KC #20 How is a compound different than an element?

KC #22 What re chemical symbols and chemical formulas used for?

KC #11 What is a homogeneous mixture? Example?

What is a heterogeneous mixture? Example

KC #21 How can you distinguish a pure substance from a mixture?

What are the a processes you can do to separate mixtures?

KC #31 What is the main difference between physical changes and chemical changes?

KC #28 How does a chemical change affect the composition of matter?

KC #29 Name four possible clues that a chemical change has taken place.

KC #30 In a chemical reaction, how does the mass of the reactants compare with the mass of the products?

What processes are chemical changes (can turn compounds into elements or vice versa)?