Motion and Force
What is a force?
strength or energy as an attribute of physical action or movement.
What is energy?
the ability to do work, to make things happen and to cause changes.
When a solid changes to a liquid it is called what?
Melting
what is Reaction?
an action performed or a feeling experienced in response to a situation or event.
what is motion?
the change in an object's position over time.
Most of the energy we use originally came from?
The sun
True or false? Liquids are easy to compress than gases.
False. Liquids are much harder to compress than gases.
What make's a reaction effective?
reacting particles must collide with sufficient energy, and with the proper orientation
Force and motion are related because?
force can cause or change an object's motion
Electrical energy can be produced from what?
A variety of sources, including both renewable and non-renewable resources.
When a gas changes into a liquid it is called what?
Condensation.
When does the breaking of chemical bonds release energy?
when new chemical bonds are formed in a chemical reaction
How does force affect motion?
Force directly affects motion by causing changes in an object's state of motion.
How is energy transferred?
mechanical work, thermal conduction, radiation, and the transfer of matter.
When solids reach their melting points they become what?
a liquid state
What are the four types of reaction?
synthesis (combination), decomposition, single displacement, and double displacement.
motion can affect force because?
The motion of an object is determined by the sum of the forces acting on it.
What is the dimension of energy?
Mass, Length, and Time.
True or False? Oxygen is a form of matter
True
What leads to reaction?
when two reactant molecules effectively collide.