1. Find the symbols for the elements Aluminium, Boron, Fluorine, and Potassium.
2. Give the names (not symbols) of two elements in the same period as magnesium.
3. The photographs show six different elements. For each photograph, decide whether the
element is a metal or non-metal. Give a reason for your choice.
4.
5.
6. Fill In the blanks:
Molecules
Calcium
Mass
NaOH
compound
malleable
Bases
Metalloids
carbonate
Brittle
Alkalis
a) The elements are arranged in order of the ____________ of their atoms.
b) _______________ are particles made of two or more atoms joined together.
c) A _______________has completely different properties from the elements
from which it is made.
d) CaCO3 is a chemical formula of _____________________________.
e) The formula for sodium hydroxide is____________________
f) Hydroxides are __________________.
g) Metals are typically ____________ (they can be hammered into thin sheets).
h) _____________are elements that have the properties of both metal and nonmetal elements.
i) Synonym of _______________ is Hard but liable to break easily.
j) _____________are substances that contain metal oxides or hydroxides. (O,
OH)