Intro to Chemistry

Intro to Chemistry

EQ: What is matter and what is it made of?

What is Matter?

• Anything that has mass

• ​Anything you can use the five sense to detect

Poll

Have you learned about matter before?

• Definitely yes

• Definitely no

• I don't remember

What Is It Made Of?

• All matter is composed of atoms, the smallest unit of matter

• Atoms are made up of:

  • Protons: positively charged

  • Neutrons: neutrally charged (no charge)

Electrons: negatively charged

​}Nucleus

What are the parts of an atom?

Multiple Choice

_____________ are the only subatomic particles found outside the nucleus.

• protons

• neutrons

• electrons

• none of these are found in the nucleus

What does the Periodic Table tell us?

• Element:  The smallest subunit of matter that retains the same properties

•  Number of Protons is what determines the element

•  Carbon:  C

  •  6 Protons

  •  6 Electrons

  •  6 Neutrons​

Open Ended

Look up the definitions of the words 'element' and 'atom'. What's the main difference between the two?

What are the types of bonds found with atoms?

1. Nuclear Bonds

• Between Protons and Neutrons=nucleus

• REALLY STRONG

2. Bonds between atoms

• Sharing of electrons=molecule

• Much weaker​

What are Nuclear Bonds?

• Strongest types of bonds

• Found in the nucleus of an atom

• What particles is this bond made of?

      Protons and Neutrons

If this bond is the strongest, how hard is it to break?

Extremely hard

So if you’re trying to break a nuclear bond (the nucleus of an atom), how many atoms are you using?

Just one​

What about Bonds between Atoms?

• 2 or more atoms bonded together makes a Molecule​

• ​

  • ​Water=H₂O=2 Hydrogen atoms + 1 Oxygen atom

  • ​​Atmospheric oxygen=O₂=2 Oxygen atoms

​O O

Multiple Choice

Which type of bond is the strongest?

• bonds between atoms

• nuclear bonds