Periodic Table
These vertical columns have similar properties
Groups
Who discovered the nucleus with the gold foil experiment?
Rutherford
Metals lose electrons to form these positive ions
Cations
Change non-metal ending to this for ionic compounds
-ide
5 clues for chemical changes are?
1. Colour
2. Gas
3. Precipitate
4. Temperature Change
5. Odour
Group 1 elements that are highly reactive, soft and have 1 valence electron
Alkali Metals
What are the positive and neutral particles in the nucleus called?
Protons and Neutrons
Non-metals form these negative ions
Anions
Prefixes used only for these compounds
Molecular
Mass 75g, Volume 15cm3 What is the density?
5g/cm3
Gallium (Ga)
A neutral atom has equal number of these two subatomic particles
Protons and Electrons
What is the bond called in a molecular compound?
Covalent Bond
Name PCl3
Phosphorus trichloride
How many sulfur atoms in Al2(SO4)3
3
Group 18 elements that don't react
Noble Gases
The first orbit/ shell holds this many electrons maximum
2 e-
Metals + Non-metals = this type of compound
Ionic
Formula of carbon dioxide
CO2
Count all atoms in Ca3(PO4)2
Ca = 3, P = 2, O=8
Total = 13
The staircase separates these three types of elements
Metals, Non-metals and Metalloids
Draw the Lewis dot structure for magnesium ion
[Mg2+] 10 electrons
Which has a covalent bond?
SnO2
Sc2O3
SeO2
SeO2
CH4 , AlCl3
Is baking a cake physical or chemical change? Why?
Chemical change, new substance is formed using heat