Download Unit 3 Activity Exploring Periodic Trends… MORE! Name: Directions

Unit 3 Activity
Exploring Periodic Trends… MORE!
Name: ____________________
Directions:
1. Obtain a laptop and go to the website: http://www.ptable.com/
2. Click the blue “properties” tab located at the top of the screen.
3. You will use the interactive tools and this worksheet to continue to learn about the trends
(patterns) that exist within the periodic table.
4. You may use Google or your book to help you with new/unknown terms.
5. *Helpful hint, make sure you know where the atomic number is located and do not confuse it for
other numerical values.
Trend 1: Covalent Radius
1. Select the “Radius” bubble located towards the top of the page near the enlarged element box.
2. Click the “Covalent” bubble to the right.
3. Look at the numerical value located under each of the elements and answer the following
questions:
a. What does atomic covalent radius mean?
b. Which element has the highest number value?
c. Which element has the lowest number value?
d. What happens to the numerical value as you read across a period?
e. What happens to the numerical value as you read down a group?
f.
Write two general sentences summarizing the trend for atomic radius on the periodic
table.
Trend 2: Density
1. Select the “Density” bubble. Keep in STP.
2. Look at the numerical value located under each of the elements and answer the following
questions:
a. What is the equation for density?
b. Is density a physical or chemical property?
c. Is density an intensive or extensive property? Why?
d. What does it mean for an atom to have a high density?
Unit 3 Activity
e. Which element has the highest numerical value?
f.
Which element has the lowest value?
g. What happens to the numerical value as you read across a period?
h. What happens to the numerical value as you read down a group?
i.
Which category of elements has the highest density, metals, nonmetals, metalloids?
j.
Write two general sentences summarizing the trend for density on the periodic table.
Trend 3: Melting Point
1. Select the “Melting Point” bubble.
2. Look at the numerical value located under each of the elements and answer the following
questions:
a. What unit is the melting point measured in, Celsius, Fahrenheit, or Kelvin?
b. Is melting point a physical or chemical property?
c. Is melting point an intensive or extensive property? Why?
d. What does it mean for an atom to have a high melting point?
e. Which element has the highest numerical value?
f.
Which element has the lowest value?
g. What happens to the numerical value as you read across a period?
h. What happens to the numerical value as you read down a group?
i.
Which category of elements has the highest melting points, metals, nonmetals,
metalloids?
j.
Write two general sentences summarizing the trend for melting points on the periodic
table.
Unit 3 Activity
Trend 4: Boiling Point
1. Select the “Boiling Point” bubble.
2. Look at the numerical value located under each of the elements and answer the following
questions:
a. What unit is the boiling point measured in, Celsius, Fahrenheit, or Kelvin?
b. Is boiling point a physical or chemical property?
c. Is melting point an intensive or extensive property? Why?
d. What does it mean for an atom to have a high boiling point?
e. Which element has the highest numerical value?
f.
Which element has the lowest value?
g. What happens to the numerical value as you read across a period?
h. What happens to the numerical value as you read down a group?
i.
Which category of elements has the lowest boiling points, metals, nonmetals, metalloids?
j.
Write two general sentences summarizing the trend for boiling points on the periodic
table.
Trend 5: Atomic Mass
1. Go to the “Wikipedia” tab.
2. Look at the numerical value located under each of the elements, this is the atomic mass. Answer
the following questions.
a. Is mass an intensive or extensive property? Why?
b. Which element has the highest numerical value?
c. Which element has the lowest value?
d. What happens to the numerical value as you read across a period?
e. What happens to the numerical value as you read down a group?
f.
Write two general sentences summarizing the trend for mass on the periodic table.