Atoms and Elements

Atoms and Elements

What makes up all matter in the universe?

Open Ended

What do you think an atom is?

The Atom: Basic Building Block

• Definition: An atom is the smallest unit of matter that retains the properties of an element.

• Atoms are the basic building blocks of matter.

• They are incredibly small and make up everything around us.

The Building Blocks

• Elements: Fundamental substances that cannot be broken down into simpler substances

• Properties: Characteristics that describe the behavior and interactions of elements

• Periodic Table: Organizes elements based on their properties and atomic numbers

What is an Element?

• An element is a pure substance made up of only one type of atom.

• Elements are listed on the periodic table

• Each element has a unique symbol (e.g., H for hydrogen) and specific properties.

Multiple Choice

What is the definition of an atom?

• The smallest unit of matter that retains the properties of an element

• The total number of protons and neutrons in an atom

• The number of protons in an atom determines its atomic number

• Each element is characterized by the number of protons in its nucleus

Multiple Choice

What is the purpose of the Periodic Table?

• To organize elements based on their properties and atomic numbers

• To describe the behavior and interactions of elements

• To break down elements into simpler substances

• To explain the atomic structure of elements

Multiple Choice

Atoms of the same element are:

• very different

• different

• exactly alike

• nothing alike

Does a Single Atom Have the Properties of an Element?

• No, one atom does not have the properties of an element.

• Elements are defined by the properties of a group of atoms, not just one.

• Elements' properties are the result of interactions between many atoms of the same element.

Multiple Choice

A(n) __________ is a pure substance made of only one type of atom.

• compound
• element
• proton
• electron

Example 1

• Hydrogen (H) - A single hydrogen atom is a gas, but a collection of hydrogen atoms makes up the gas we use in balloons.

Example 2

• Oxygen (O) - A single oxygen atom is not the same as the oxygen we breathe; it's two oxygen atoms bonded together (O₂).

Example 3

• Gold (Au) - A single gold atom does not have the shiny and valuable properties of a gold bar, which is made up of countless gold atoms.

Fill in the Blanks

Properties of an element are exactly the properties of a

Poll

Were you able to undertand today's topic?

• I'm a nerd!

• Almost there. just need to got through it once.

• so-so, it wasn't that hard though

• I wish I werent's made up of atoms