____
Name:
Student ID Number:
Period:
[)ate:
Unit 2
Section A Supplement
1.
Identify each chemical and physical
property of calcium that
is described in the following paragraph.
Calcium is a shiny, silvery-white metal, When it is exposed to moist air, it readily tarnishes. At
room temperature, calcium exists in the solid state and its melting point is 842 °C. It reacts with
acid and with water to yield hydrogen gas.
Chemical Properties:
Physical Properties:
2.
Analyze the following data and classify each substance as a metal, nonmetal, or metalloid.
Element
Malleable or
Brittle/Color?
A
brittle/yellow
dull
yes
no
B
malleable/silver
shiny
yes
yes
C
brittle/grey
dull
no
no
D
brittle/black
dull
yes
no
E
malleable/grey
shiny
yes
yes
.
Shiny or
Reacts with
Conductor?
Dull?
Acid?
Metal, Nonmetal, or
Metalloid?
3. Name the family to which each element belongs:
a.K______
b.
Be
c.
Kr__________________
d.
I_________________
The melting point of Fluorine is —219 °C while that of bromine is —7.3 °C. Estimate the melting
how you arrived at your estimation.
point of chlorine. Explain
________________________
Given a periodic table
containing:
a. LiandS
4.
Period:
Student ID Number:
Name:
Date:
, predict the formula for a compound
2
P
3
0 and Ca
2
and the formulas Na
b.MgandN___________
5. Complete the following table:
Element
Symbol
Number of
Protons
Atomic
Number
Number of
Neutrons
Mass
Number
20
Neon
8
6
14
7
23
Na
an
6. An atom of element X has 6 protons and 6 neutrons. Is an atom that has 6 protons and 10 neutrons
isotope of element X? Explain.
7.
Identify the element that is described by each of the following statements:
a. This element is a metal, It forms a 2+ cation, It is in the alkaline metals group
period as the metals used in a penny.
b.
8.
This element is a metalloid. It is in the same period as the element found in
drinks and other food items.
and in the same
cans used for soft
Predict whether each of the following elements would be more likely to gain or lose electrons:
a. Cl
b. Mg
c. Pb_
d. S
e.Al
10. Why is knowledge of the chemical and physical properties of matter important in the coin design
process?
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