Download Atomic Structure and Periodic Table Worksheet

SN ____ Name _________________________________
Period _____
Date Monday, November 10, 2014
Atomic Structure and Periodic Table Worksheet
Atomic Mass
If we could see a single atom, it would be much easier to measure the exact mass of an element. Since
we cannot do this, a method of measurement was devised. Assigning the element carbon an atomic
mass of 12 and comparing every other element to carbon did this. For example, the mass of a
magnesium atom is approximately twice that of carbon, so it is given the atomic mass of 24. The unit
used is atomic mass unit (amu).
Use your Periodic Table to complete the exercise below.
1. Which element is four times the mass of carbon?
_____________________________________
2. Name the element with the smallest atomic mass. _____________________________________
3. Which element is four times the mass of helium? ______________________________________
4. Name the element with the greatest mass. ___________________________________________
5. Which element is about a third the mass of tin? _______________________________________
6. Name the element that is twice the mass of oxygen? __________________________________
Chemical Symbols
Cross out the incorrect chemical symbols.
Sb
La
K
Nr
Zi
Ps
F
Bc
Co
Hy
Ar
Ts
H
Tu
Ds
Al
Sp
Mg
Ne
Ze
Au
P
Ms
I
B
Cb
Fe
Xe
Ox
Go
Se
Pb
Gl
Periodic Trends
7. As you move down a group, atomic radius (size) ___________________.
 Why? __________________________________________________________________________
8. As you move across a period, atomic radius (size) ___________________.
 Why? __________________________________________________________________________
9. Anions (negative ions) are ________________________ than their respective atoms.
 Why? __________________________________________________________________________
10. Cations (positive ions) are ________________________ than their respective atoms.

Why? ________________________________________________________________________
11. As you move down a group, reactivity in metals ___________________.
12. As you move down a group, reactivity in nonmetals _____________________.
13. As you move across a period, reactivity in metals ___________________.
14. As you move across a period, reactivity in nonmetals ___________________.
Rewrite the sentences, correcting any errors.
15. Mercury is a solid at room temperature.
___________________________________________________________________________________
16. Helium can be found in two places on the Periodic Table.
___________________________________________________________________________________
17. Zinc is a liquid at room temperature.
___________________________________________________________________________________
18. Periods read from top to bottom on the Periodic Table.
___________________________________________________________________________________
19. Carbon is a shiny silver metal.
___________________________________________________________________________________
20. Einstenum is named after Alfred Einstein.
___________________________________________________________________________________
21. The group number tells us how many electron shells an atom has.
___________________________________________________________________________________
22. Most of the elements in the periodic table are non-metals.
___________________________________________________________________________________
23. Electrons are found in the nucleus and have a positive charge.
___________________________________________________________________________________
Complete the following passage.
Use the words at the bottom of the page to complete the passage.
Anything that takes up space is called ___________________ . There are three states of matter;
___________________, ___________________ and ___________________. For example, water exists
in ___________________ form as rivers, lakes and streams. Water in a solid form is called
___________________. When water is heated to a vapor, it becomes a ___________________ known
as steam. The state in which water is found is determines by the ___________________.
Elements are the basic substances from which all other substances are made. They cannot be broken
up chemically into simpler substances, but they are made of smaller particles called ___________.
Atoms have a _____________ at the center. This is made up of protons which carry a ______________
charge and __________ which do not carry a charge.
Around the nucleus are __________ which are negatively charged and which move around the nucleus
in pathways called ____________.
The elements can be arranged in a table according to the size of their atoms and number of
_____________ in each orbit. This is called the Periodic table. Knowing where an ____________ fits
into the Periodic table can help us predict what that element will be like and how it will behave.
Word List
element
nucleus
matter
orbits
positive
electrons
neutrons
electrons
liquid
gas
ice
atoms
solid
liquid
temperature