section 1

Describing Matter

Properties of Matter

Properties of Matter

• Matter can have many different properties or characteristics

Properties of Matter

• Matter can have many different properties or characteristics

• Chemistry is the study of how matter changes

Properties of Matter

• Matter can have many different properties or characteristics

• Chemistry is the study of how matter changes

• Substance is a single kind of matter and its specific properties

Properties of Matter

• Matter can have many different properties or characteristics

• Chemistry is the study of how matter changes

• Substance is a single kind of matter and its specific properties

• 2 kinds of property:

• Physical

• Chemical

Physical Properties of Matter

Physical Properties of Matter

• Characteristics of a pure substance that can be observed without changing it into another substance

Chemical Properties of Matter

Chemical Properties of Matter

• Characteristic of a pure substance that describes its ability to change

Elements

Elements

• Element is a pure substance that cannot be broken down.

Elements

• Element is a pure substance that cannot be broken down.

• Elements are the simplest substances

Particles of Elements- Atoms

Particles of Elements- Atoms

• The basic particle from which all elements are made

When Atoms Combine

When Atoms Combine

• Chemical bond is a force of attraction between 2 atoms

When Atoms Combine

• Chemical bond is a force of attraction between 2 atoms

• Molecules combine to form larger particles

Compounds

Compounds

• A compound is a pure substance made of 2 or more elements

Compounds

• A compound is a pure substance made of 2 or more elements

• Chemical Formula shows the element in the compound and ratio of atoms

Mixtures

Mixtures

• Made of 2 or more substances

Mixtures

• Made of 2 or more substances

• Mixtures differ from compounds in 2 ways

• Each substance in a mixture keeps its individual properties

• Mixtures are not combined in a set ratio

Mixtures

• Made of 2 or more substances

• Mixtures differ from compounds in 2 ways

• Each substance in a mixture keeps its individual properties

• Mixtures are not combined in a set ratio

• Heterogeneous Mixture: You can see the different parts

Mixtures

• Made of 2 or more substances

• Mixtures differ from compounds in 2 ways

• Each substance in a mixture keeps its individual properties

• Mixtures are not combined in a set ratio

• Heterogeneous Mixture: You can see the different parts

• Homogeneous Mixture: You cant see the different parts