Elements and the periodic table
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How many different types of atom does an element contain?
An element contains just one type of atom. (Textbook p age 22)
What is a compound?
A compound contains two or types of atom chemically bonded together. (Textbook page 22)
Complete the word equation Iron + sulfur ⇒ ___________
Iron + sulfur ⇒ Iron sulfide (page 24 textbook)
What are the state symbols used when writing chemical equations?
solid (s) liquid (l) gas (g) solution (aq) (page 28 textbook)
What is the atomic number?
The atomic number is the number of protons, (which is the same as the number of electrons) (Page 33 textbook)
Name the alkali metals
Lithium, sodium potassiium rubidium caesium (page 50, textbook)
What is the group number of the Alkali Metals?
Group 1 (Periodic table or textbook p 50)
What are the similarities in the physical properties of the alkali metals?
• low melting points • very soft • low densities (Page 50 textbook)
What typical metal properties do the alkali metals have?
• Shiny • good conductors of heat • good conductors of electricity. • Make basic oxides.
State two differences you would see between the reactions of Potassium and Lithium with water.
Any two • Potassium reacts faster • Potassium fizzes more. • Potassium melts • Potassium forms a ball. • Potassium moves around in the water faster. • Potassium catches fire • Potassium produces a lilac or purple flame.