Structures of Matter

Matter and Atomic Structure

​What we will learn:

• Revision: Year 8 chemistry content

• What is matter?

• What is the atom?

• Atomic structure

Multiple Choice

Chocolate Chip Muffin

• Compound

• Element

• Mixture

Multiple Choice

Mg

• Compound

• Element

• Mixture

Multiple Choice

Salt (NaCl)

• Compound

• Element

• Mixture

Multiple Choice

A substance that contains only one type of atom is a(n)

• compound
• element
• heterogeneous mixture
• homogeneous mixture

Multiple Choice

How are elements on the periodic table arranged by?

• in alphabetic order

• simular physical & chemical properties

• their symbols

• Just simular physical properties

Open Ended

How would you define matter?

​What is chemistry?

The study of the properties and behaviours of matter

We must understand what matter is and how it behaves, so we can do new and exciting things with it!

​What is matter?

• Anything that has mass and takes up space

• We build up from very small particles, to very large particles, and then to amalgamations of particles to create objects

What is the atom?

• The basic unit of matter

  • Smallest unit of matter that can be divided into without the release of charged particles

• Defines the element

  • i.e. an atom of oxygen, an atom of magnesium

Multiple Choice

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Multiple Choice

Subatomic particles with a positive charge

• neutrons

• atomic mass

• protons

• isotopes

Multiple Choice

Subatomic particles that are neutral in charge

• Neutrons

• Protons

• Nucleus 

• Electrons

Multiple Choice

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells

• Orbitals

• Electron Cloud

• Nucleus

​Atomic Structure

• ​Nucleus

• Subatomic particles

• Orbitals/shells

​Subatomic Particles

• Protons

  • positive, in the nucleus, heavy

• Neutrons

  • neutral, in the nucleus, heavy

• Electrons

  • negative, shells, light

We can determine properties and behaviours from the number and type of these subatomic particles

​History of atomic structure

Multiple Choice

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Multiple Choice

Subatomic particles with a positive charge

• neutrons

• atomic mass

• protons

• isotopes

Multiple Choice

Subatomic particles that are neutral in charge

• Neutrons

• Protons

• Nucleus 

• Electrons

Multiple Choice

What is one way Neutrons are different from electrons?

• they both are negative

• neutrons have no charge, while electrons have a negative charge

• Both are in the nucleus( center of atom)

• Electrons are inside nucleus and neutrons are outside the nucleus.

Multiple Choice

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Multiple Choice

What number indicates an electron?

• 1

• 2

• 3

• 4

Next up

• Atomic number and atomic mass

• Calculating subatomic particles

• Models of the atom

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