General Knowledge Flashcards
What is group 1 called?
Alkali Metals
What is group 2 called?
Alkali Earth Metals
What is group 17 called?
Halogens
What is group 18 called?
Noble Gases
What are the properties of group 1?
High thermal conductivity, high electrical conductivity, 1 valence electron.
Group 1 is reactive to…
Hydrogen, Oxygen, Acid
Group 2 is reactive to…
Halogens, Oxygen, Chalcogens
Fun Fact: Alkaline Earth metals are the second most reactive family of elements.
Describe Noble gases
Colourless, Odourless, tasteless, non-flammable (under standard conditions), full outer shell, inert (nonreactive) with other elements.
In what order should you balance equations?
Metals, non-metals, hydrogens, oxygens
What is the difference covalent molecules and ionic compounds?
Covalent –> Bonding between atoms, NM+NM, Shared e-, use Greek prefixes
Ionic –> Bonding between ions, M+NM, transfer of e-
What is the difference between a physical and chemical property?
A physical property is a characteristic that doesn’t change the chemical identity of a substance.
List Physical properties
Boiling point, colour, volume, density, and viscosity
List the chemical properties
Flammability, pH, oxidation, corrosive, combustibility, taste, and explosiveness.
What are the physical properties of copper?
a good conductor of heat and electricity, malleable, and does not react with diluted acids.
Why is potassium not found as an element in nature?
Potassium is a highly reactive metal which commonly reacts with oxygen, water, and acids. Because it is so reactive, it hides from other elements.
