Lesson 1 Classifying Matter Lesson 2 Physical Properties Chapter Introduction Lesson 1 Classifying Matter Lesson 2 Physical Properties Chapter Menu

The study of matter and the changes it undergoes. Chemistry: The study of matter and the changes it undergoes.

Understanding Matter Matter is anything that has mass and takes up space. Lesson 1-1

What is mass? How is it measured? What is volume? Which has more volume a deflated balloon or an inflated balloon?

Understanding Matter (cont.) Everything you can see is matter. Are there things you cannot see, that are matter? What is the smallest whole part of matter? Lesson 1-1

It’s a “classified” MATTER!

Start here… Matter Pure Substances Mixtures Lesson 1-3

Pure Substances A substance is matter where the entire composition is ALWAYS the same. Meaning: it is always made up of one or more atoms in the same combinations. Examples are: elements and compounds. 118 elements and 10 million or more compounds Lesson 1-3

Substances-Element An element is a substance that consists of just one type of atom and each has their own symbol. Because there are 118 known elements, there are 118 different types of atoms. Lesson 1-3

Substances-Element Each type of atom contains a different number of protons in its nucleus. The # protons in an atom is the atomic number of the element. Lesson 1-3

Substances-Compound A compound is a type of substance containing atoms of two or more different elements chemically bonded together. The combination of symbols and numbers that represents a compound is called a chemical formula. glucose Lesson 1-3

Draw and label an atom be sure to use proton, neutron, nucleus, electron, + charge, - charge, o charge

3.Only one type of atom? It is an element. Diatomic element Element Lesson 1-3

4. If it contains more than one type of atom, it is a compound. Lesson 1-3

Not An Element or Compound? It is a Mixtures There are several kinds of mixtures. Lesson 1-4

Mixtures Heterogeneous mixture Homogeneous mixture 2.is a type of mixture in which the individual substances are not evenly mixed. 4. Two samples of a heterogeneous mixture can have different amounts of the substances. 3. is a type of mixture in which the individual substances are evenly mixed. 5. Two samples of a homogeneous mixture have particles so small and well-mixed that they are not visible, even with most high-powered microscopes.

Mixtures (cont.) To dissolve means to form a solution by mixing evenly. A homogeneous mixture is also known as a solution. Lesson 1-4

Compounds v. Solutions The composition in a compound does not vary. Therefore, a chemical formula can be used to describe the compound. Because composition in a mixture can vary, a chemical formula cannot be used to describe mixtures. Lesson 1-5

Lesson 1-6

Which term describes matter that can vary in composition? A. atom B. element C. mixture D. substance Lesson 1 – LR1

What is the combination of symbols and numbers that represent a compound? A. atomic number B. chemical formula C. mixture D. substance Lesson 1 – LR2

B. heterogeneous mixture C. chemical formula D. compound Which term refers to a type of substance containing atoms of two or more different elements chemically bonded together? A. homogeneous mixture B. heterogeneous mixture C. chemical formula D. compound Lesson 1 – LR3

1. The atoms in all objects are the same. Do you agree or disagree? 1. The atoms in all objects are the same. 2. You cannot always tell by an object’s appearance whether it is made of more than one type of atom. Lesson 1 - Now

Lesson 2 Reading Guide - KC Physical Properties What are some physical properties of matter? How are physical properties used to separate mixtures? Lesson 2 Reading Guide - KC

Lesson 2 Reading Guide - Vocab Physical Properties physical property mass density solubility Lesson 2 Reading Guide - Vocab