Name____________________________
Date______________________________
Interactive Learning—Structures and Bonding Webquest
http://www.ewart.org.uk/science/structures/struct_index.htm
Click on Atomic Structure.
Atomic Structure
Atoms are some of the simplest particles to make up solids, liquids or gases. The atoms are always
moving and may be joined together by special bonds
Now answer these questions ... (write all numbers)
1. How many different particles make up the atom ?
2. How many different particles are in the nucleus ?
3. What particles are found outside the nucleus ?
4. Are all the electrons always the same distance from the nucleus ?
5. What particle, beginning with P, is found in the nucleus ?
6. What particle, beginning with N, is found in the nucleus ?
7. What particles are mainly involved in chemical reactions ?
8. Nuclear reactions may release large amounts of what ?
... and now these questions (write all numbers)
1. Do all atoms have the same number of electrons ?
2. The electrons are found in layers - what is another name for these layers ?
3. How many electrons do many atoms try to get in the outer shell ?
4. How many electrons does sodium have in the outer shell ?
5. How many electrons does chlorine have in its outer shell ?
6. What is the name of the table which arranges the atoms according to their electrons ?
7. How many electrons are in the outer shell of the atoms in column one ?
8. How many electrons are in the outer shell of the atoms in the second column ?
Click the “back” arrow on your browser window to go back to the Structures page.
Click on Electrons and Electron Shells.
Electrons and Electron Shells
Fill in these missing words ...
Atoms are made from ____________ different types of particles. On the outside of an atom you can find
a number of_____________. The middle of the atom is called the_____________ . Different types of
atom have different numbers of ___________ on the outside. For example____________ has only 1
electron on the outside.
Now answer these questions:
1. How many particles are there in an atom ?
2. Which particles are on the outside ?
3. What two particles are in the nucleus ?
4. Electrons are found around the nucleus in layers, or what ?
5. How may electrons are there in a hydrogen molecule ?
6. How many electrons are there in a sodium molecule ?
7. How many electrons are in the first layer (shell) of a sodium atom?
8. How many electrons are in the second shell of a sodium atom ?
9. How many electrons are in the last shell of a sodium atom ?
10. Sodium is in which column of the periodic table ?
Now fill in these missing words ...
Different atoms have_____________ numbers of atoms. Protons and neutrons are on the inside of the
nucleus and the electrons are on the____________ . The electrons are arranged into layers, or
__________, around the outside of the nucleus.
Atoms can have a maximum of ___________ electrons in the first shell and in the second and third
shells.
Click the “back” arrow on your browser window to go back to the Structures page.
Click on Ionic Bonding.
Ionic Bonding
Fill in these missing words ...
When atoms lose or gain electrons they are called___________ . If an atom gains an __________ it is
called an anion. When an atom loses an electron it is called a ___________.
A sodium atom has eleven _______________ and a_____________ atom has seventeen electrons.
Now answer these questions:
1. How many electrons does a sodium atom have ?
2. How many electrons does a chlorine atom have ?
3. How many electrons does a sodium atom want to lose ?
4. How many electrons does a chlorine atom want to gain ?
5. How many electrons does a sodium ion have ?
6. How many electrons does a chloride ion have ?
7. What is a positive ion called ?
8. What is a negative ion called ?
9. How many electrons do atoms want to have in their outside shells ?
10. What sort of ion is sodium ?
Click the “back” arrow on your browser window to go back to the Structures page.
Click on Covalent Bonding.
Covalent Bonding
Fill in these missing words ...
Ionic bonding is when atoms gain or lose_______________ . Most atoms want _____________ electrons
in their outside shells but a hydrogen atom wants only electrons.
Carbon is an atom with a total of ___________electrons. This means that it has ____________ electrons
in its outside shell.
Now answer these questions:
1. How many electrons does a carbon atom have ?
2. How many electrons does a hydrogen atom have ?
3. How many electrons does a hydrogen atom want in its outside shell ?
4. How many electrons does a carbon atom want in its outside shell ?
5. What type of bonding involves the loss/gain of electrons ?
6. What type of bonding involves sharing electrons ?
7. How many carbon atoms are there in a methane molecule ?
8. How many hydrogen atoms are there in a methane molecule ?
9. What is the chemical symbol for carbon ?
10. What is the chemical symbol for hydrogen ?