lesson 1
lesson 2
lesson 3
lesson 4
definitions
100
What does an electric dot diagram include?
The symbol for the element surrounded by dots.
100
What is an ionic bond?
An ionic bond is the attraction between 2 positively charged ions.
100
TRUE OR FALSE A covalent bond in which electrons are shared unequally is a non polar bond?
False its a polar bond.
100
A metal is composed of closely packed what?
Charged metal ions.
100
What is a valence electron?
A valence electron are the electrons that are in the highest energy level of an atom and that are involved in chemical bonds.
200
The number of valence electrons in each atom help determine what?
Chemical properties of that element.
200
How do you write a formula for an ionic bond?
Write the symbol of the positive ion then the symbol of the negative ion.
200
Covalent bonds form between what type of atoms?
Nonmetal atoms.
200
What are nonmetals at room temperature?
A liquid.
200
What is an ion?
An ion is a atom or group of atoms that has an electric charge.
300
What is chemical bond the face of?
The attraction that holds atoms together.
300
What do subscripts do?
Subscripts tell the radio of elements in a compound.
300
When electrons in a covalent bond are shared unequally, the atom with the stronger pull gains what charge?
A negative charge.
300
What is a metal crystal composed of?
A metal crystal is composed of closely packed, positively charged metal ions.
300
What is a molecule?
A molecule is an neutral group of atoms joined by covalent bonds.
400
What can charged particles that are free to move do?
They can conduct an electric current.
400
What do ionic compounds form?
ionic compounds form hard brittle crystals that have high melting points.
400
If a molecule has a negatively charged end and a positively charged end. What is the molecule?
polar.
400
What is thermal energy?
Thermal energy is the total energy of motion of all the particles in an object.
400
What is a metallic bond?
A metallic bond is an attraction between a positive metal ion and the electrons surrounding it.
500
What are metals?
They ductile and malleable.
500
What is a Chrystal?
ions form an orderly, three-dimensional arrangement.
500
Polar molecules are connected to each other by weak attractions between their slight negative & positive charge. What are these attractions called?
Van Der Waals Porces.
500
Thermal energy flows from what matter to what matter?
warmer matter to cooler matter.
500
What is an alloy?
An alloy is a mixture made of two or more elements, at least one of which is a metal.
M
e
n
u