Chemical Bonds
The most stable electron configuration for an atom is?
When the highest energy level has a full set of electrons (e.g. 8)
How many of each element are in CH4?
1C and 4H
What are substances that undergo a physical change called?
Reactant
What is the force of attraction between molecules of the same substance that keeps them together?
Cohesion
Denotes how many atoms or molecules are involved in a reaction?
Coefficient
The bond formed with the transfer of valence electrons?
Ionic
What does the arrow in a chemical formula tell you?
The direction of the chemical reaction
What are the substances formed because of a chemical change called?
Product.
What is the force of attraction between molecules of different substances that keeps them together?
Adhesion
How many hydrogens and oxygens are included on each side of the equation H2 + O2 -> H2O?
Left: 2H, 2O; Right: 2H, 1O
The bond formed when atoms share valence electrons?
Covalent
What are the reactants in H2 + O2 -> H2O?
H and O
An atom or a group of atoms that has a positive or negative charge?
Ion.
What allows water to move against gravity, like in a tree?
Capillary action
To balance it, what coefficient needs to be entered on the left-hand side of the equation H2 + O2 -> H2O?
2H2
The bond has a slight positive and negative charge on each atom due to an unequal sharing of electrons.
Polar Bond
What is the product in H2 + O2 -> H2O?
H2O
A molecule that has slight positive and negative charges due to an imbalance?
Polar Molecule
Which has a higher density, liquid or solid water?
Liquid, meaning more molecules in a liter of liquid water than frozen water.
To balance it, what coefficient needs to be entered on the right side of the equation H2 + O2 -> H2O?
2H2O
What types of chemical bonds can dissolve each other?
Ionic and Polar OR nonpolar
What diagrams show how electrons move between atoms and the resulting ions created?
Electron dot diagrams
A force of attraction between atoms or a group of atoms due to the sharing or transferring of electrons?
Chemical Bond
How does water form a rounded bead?
Surface tension through hydrogen bonding
What is the bond called when two atoms share three pair of electrons?
Triple bond