Atomic Structure
What particle has a positive charge and is found in the Nucleus of an Atom?
Proton
What do we call a substance made of only one type of Atom?
An Element!
What do we call two or more atoms bonded together?
A Molecule!
What do we call a substance made of two or more different elements that are chemically bonded?
Which compound is commonly called table salt?
NaCl (Sodium Chloride)
What two particles are found in the Nucleus of an Atom?
Protons and Neutrons
What information does the atomic number tell us?
The number of Protons
Is N₂ a molecule? Why?
Yes, because two atoms are bonded together
Is NaCl an element, molecule, or compound?
A Compound!
What compound do humans breath out during respiration?
Carbon dioxide (CO₂)
Which subatomic particle has a negative charge?
Electrons
Oxygen (O₂) is made of two oxygen atoms bonded together, is it an element, a molecule, or a compound?
Molecule
Which of the following is a molecule: H, He, or H₂?
H₂
What two elements make up water (H₂O)?
Hydrogen and Oxygen
Common Sugar (Glucose) has the chemical formula C₆H₁₂O₆
- How many atoms are there in one sugar molecule?
24
Which particle determines the identity of an element?
Protons
This element has only 1 proton! It is the smallest element!
Hydrogen!
True or False: All molecules are compounds
False!
How many total atoms are in one molecule of CO₂?
Three!
How can substances be identified?
By their physical and chemical properties!
What would happen to an Atom's charge if it gained an extra electron?
It would become negative!
What was the group name for the elements we watched videos of yesterday that reacted strongly with water? The elements in this group want to give away an electron.
Alkali Metals OR Group 1 Metals
Is Ammonia (NH₃) a molecule?
Yes! It's both a molecule AND a compound
Why is water considered a compound?
It's made of two different elements bonded together
Which four elements make up most of our body and most living things?
CHON OR HONC, Carbon, Hydrogen, Oxygen, and Nitrogen