Bonds
This type of bond is formed when two atoms share electrons
Covalent
What type of bond is formed when one atom transfers electrons to another
Ionic
The arrow in the middle of a chemical equation means this???
To Yield
Balanced or Unbalanced?
Balanced
Compare a strawberry, a banana, and a coconut - which one would best represent an isolated system and why?
Coconut
Name a common molecule that has a covalent bond
Water (H2O)
What is the charge of sodium when it forms an ionic bond with chlorine?
The right side of a chemical equation is refered to as the ??
Products
Balanced or Unbalanced
Unbalanced
The Water Cycle is a good example of what type of system and why?
Open
Because both matter (water) and energy (heat) are exchanged from the ocean to the atmosphere and back.
Describe how covalent bonds differ from ionic bonds.
Covalent are two or more non metals while Ionic is a metal plus a non metal element
This is that name given to a Positive Ion
What is a Cation
The small number that follows an element is called this _____ and indicates what _______?
Subscript......how many atoms of a particular element.
What are the correct coefficients needed to balance the equation?
2, 2, 1
Placing a cork in a bottle would create what type of system inside the bottle and why?
Closed - because no matter can escape or enter the bottle through the cork however energy can enter the bottle and/or escape the bottle if the bottle is colder or hotter than its surroundings.
This type of Covalent Bonding Share 2 pairs of electrons between 2 atoms
What is a Double Bond
This is the name given to a negative ion
What is an anion
If there is no number written before a molecule - it is assumed to be how many?
One
How many O (oxygen) atoms on the Reactant side of the equation
8
How do systems affect the conservation of mass during reactions
If it is a closed system the products mass will remain the same
However in a open system gas will escape and the mass of the products will be less
This type of Covalent Bonding shares 1 pair of electrons between each of the 3 atoms (example H2O)
What is Two single bonds
Ionic bonds are weaker than covalent bonds and have lower melting points.
False
Chemical Equations are models that represent .....
How matter interacts and is transformed from one thing to another.
This equation has ___________ # of reactants
_______________ # of products created from
_____________ # of elements
2, 2, and 3
How can your knowledge of LOCO mass and systems help you to determine the efficiency of a system?
Because the less mass or energy lost in the product the greater the efficiency of the system