Quiz 1 Flashcards
Bohr Rutherford diagram
A diagram that shows the makeup of an atom.
How do you make a Bohr Rutherford diagram?
How to find the number of neutrons- mass number minus the number of protons
How to find the number of electrons- atomic number
How to find the number of protons- atomic number
Lewis dot diagram
Shows the number of valence electrons
How to make a Lewis dot diagram
First you must find the number of valence electrons. You can do this by looking at the group number of the element on the periodic table. If the number has 2 digits, use the second number.
Periods
Horizontal rows on the periodic table. There are 7 periods
Groups/ families
Vertical columns on the periodic table.
There are 18 groups/ families.
They are referred to as families because they share similar properties.
What are the chemical families/ groups called?
Group 1- Alkali Metals Group 2- Alkaline Earth Metals Group 3-12-Transition Metals Group 17- Halogens Group 18- Noble Gases
What are the properties of the alkali Metals?
- Low density
- Can float on water
- silvery, shiny, and soft
- highly reactive
Alkaline earth Metals
- silvery and shiny
- not soft
- not very reactive
Halogens
- very reactive
- rarely found in elemental form because they are so reactive
Noble Gases
- very stable
- colourless, odourless and tasteless
- glow when an electrical current is passed through them
Metals
An element that is lustrous, malleable, and ductile and conducts heat and electricity. Found on the left and central parts of the periodic table.
Non Metals
Usually a gas or a dull powdery solid that is not malleable or ductile and does not conduct heat or electricity. Found on the right side of the periodic table.
Metalloids
Has properties of both metals and non metals. Located along the staircase line.
