Module 4
The chemical formula for water
What is H20
The charge of an electron
What is negative
What are the substances that are present before a reaction takes place called?
What are reactants?
Where is chemical energy stored?
What is in chemical bonds?
A point against which direction is measured.
What is a reference point?
The ratio of the distance an object moves to the amount of time needed to travel the distance.
What is speed?
How many laws of motion did Newton have
What is 3?
A push or pull that acts on an object
A liquid substance capable of dissolving other substances.
What is a solvent
Atoms form bonds with other atoms because they want to complete
What is their outer shell
positively charged ions that form when an atom loses one or more electrons
What are cations?
What are the products in the this reaction?
HCl + NaOH --> NaCl and H2O
What are NaCl and H2O?
The SI unit of speed is measured in this.
What is meters per second?
The direction an object moves and the ratio of the distance to the amount of time needed to travel the distance.
What is velocity?
An object in motion (or at rest) will stay in motion (or at rest) until it is acted upon by an outside force.
What is Newtons First Law of Motion
What is the formula for force?
What is force = mass x acceleration
The reason water is attracted to other molecules that contain a full charge, like an ion, or a partial charge
What is a polar molecule or what is polarity?
A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared.
What is polar?
What is the name given to the number used to count atoms, ions, or molecules?
What are moles (6.02 x 1023)?
Name of a chemical reaction that absorbs energy from its surroundings
What is endothermic?
the equation for speed
What is distance/time or v=d/t
What is the velocity of a bicycle (in m/s) if it travels 3 km west in 4.3 min?
What is 11.63 m/s?
Definition: The tendency of an object to resist changes in it's velocity
What is inertia
Name 2 of 4 types of friction.
Static friction, Sliding (or kinetic) friction, rolling friction and fluid friction.
Type of bond that forms between molecules of water that make them stick together. They are weaker than ionic or covalent bonds.
What is hydrogen bonding?
A force of attraction between atoms or groups of atoms
Chemical bond
When naming an ionic compound, what suffix is added to the stem of the anion?
-ide
Ex: chlorine --> chloride
What is the name of the compound with the formula SiCl4?
Silicon tetracholoride
The slope of a line on a distance-time graph.
What is speed?
The rate at which an object is moving at any given time.
When an object is acted on by one or more unbalanced forces, the net force is equal to the mass of the object times the resulting acceleration.
What is Newton's second Law of Motion
For every action there is an equal and opposite reaction
What is Newton's third law of motion
Many of us use table sugar on a daily basis. The chemical formula for table sugar is C12H22O11
How many atoms are in one molecule of C12H22O11
What is 45?
The "stickiness" of water, causing it to be able to climb a vertical surface, is called
What is adhesion?
What element is always present as a reactant in a combustion reaction?
What is oxygen?
Determine the formula for iron (II) oxide.
What is FeO?
the charge for Fe is 2+ noted by roman numeral (II)
O has 6 valence electrons- charge of 2- (desires 2 more electrons in outer shell
Fe2+02- = FeO
Acceleration equation
a = vf-vi / t
On a distance-time graph for acceleration, a flat horizontal line shows this.
What is constant speed?
Strongest of the four fundamental forces.
What is Strong Nuclear Force
The force that causes objects to have weight
What is gravity