Elements & Compounds
How many atoms are in the formula C4HCl2?
7
What is a solvent and a solute?
A solvent is the liquid dissolving the substance, a solute is the substance being dissolved in liquid
What is the formula for speed and velocity?
Speed=Distance/Time, Velocity=Distance/Time+Direction
If one person pushes on a box with force of 20N North and another person pushes with a force of 15N South, which way will the box move? What will the net force be?
The box will move North, the net force is 5N North
Describe the movement of particles in solids, liquids, and gases
Solids vibrate in place, liquids are able to move around moderately, gases move around freely
How many atoms of Hydrogen are in the formula C3H6O?
6
What are 3 ways to increase the rate of dissolution?
Agitation, temperature increase, increase surface area
What does the X and Y axis represent?
Y=Distance, X=Time
What type of force causes objects to start or stop moving?
What is the relationship between temperature and kinetic energy?
What is the definition of an atom?
The smallest particle of an element; made of electrons, protons, and neutrons
What are the 5 evidences of a chemical change?
Color change, gas, light, temperature change, precipitant
What does a horizontal line mean on a distance-time graph?
The object is at rest
What is Newton's First Law
Newton’s law stating that an object at rest stays at rest or an object in motion stays in motion until unbalanced forces act upon it
When two objects are transferring heat, will the heat transfer from the hot object to the cold one or cold object to the hot one? What term describes the event when the heat transfer is done between the two objects?
Is O2 considered an a compound or molecule?
Molecule
What does it mean when a solution is saturated?
The solution can hold no more solute
What is the difference between distance and displacement?
Distance is the measure of how far something has traveled in total, displacement is the distance an object is from it's starting point
What kind of force acts on an object that is at constant speed?
Balanced Force
Describe convection, conduction, and radiation
Convection is heat transfer because of the rise of hot less dense air and sinking of cool dense air, conduction is heat transfer through touch, radiation is heat transfer through electromagnetic waves
What is the difference between a compound and a molecule?
A compound is made of two different element, a molecule is two atoms combined
What are the 3 evidences of physical change?
No new substance, Temporary, Substances retain original properties
If there is a diagonal line that is heading downwards towards the X axis after climbing up, what does that mean?
The object is returning to it's starting point
What is Newton's First Law also called?
Newton's Law of Inertia
What is the thermal equilibrium?
When the temperature of two object that are touching reach the same temperature