Atoms
What is the charge of an electron?
An electron has a negative charge.
If an element is VERY HIGHLY REACTIVE, which two groups is the element most likely located?
Groups 1 and 17 have VERY HIGHLY REACTIVE elements.
Is melting ice a physical or chemical change?
Melting ice is a physical change.
100 meters per second south
Velocity
Acceleration is caused by balanced or unbalanced forces?
Acceleration is caused by unbalanced forces.
What two subatomic particles do you add together to get the atomic mass?
You add the protons and neutrons to get the atomic mass.
What do we call the left to right rows on the Periodic Table?
The left to right rows are called Periods.
Is adding food coloring to water a physical or chemical change?
Adding food coloring is a physical change.
A student runs 100 meters in 10 seconds. What is the student's speed? (you must include units)
10 meters per second
If the forces acting on an object are balanced, what is the net force? (what is the number?)
Balanced forces are always 0 N.
What is the location of a proton in an atom?
A proton is located in the nucleus.
What do we call the up and down columns on the Periodic Table?
The up and down columns are called Groups.
When two liquids are mixed and a solid forms is a chemical change. What is that solid that forms called?
A precipitate.
1567896 mph
Speed
When a car slams on the brakes, the car stops but the driver inside the car keeps moving at the same speed. The seatbelt provides an unbalanced force to change the driver's motion. This is an example that best shows which law of motion (law of intertia, law of f=ma, or law of action-reaction)
Seatbelts best demonstrate the LAW OF INERTIA.
Which subatomic particle is so small that is barely contributes anything to the atomic mass?
An electron is so small that it barely adds anything to the atomic mass.
What does the Period Number tell you about an atom?
The Period number tells you the number of energy levels in the electron cloud.
Is lighting a match a physical or chemical change?
Lighting a match is a chemical change.
1578896 mph north
Velocity
When a bird flaps its wings down, the bird moves up. Is this Law of Inertia, Law of F=MA, or Law of Action-Reaction?
Law of Action-Reaction
If an atom has an atomic number of 17 and a mass number of 35, how many protons does the atom have?
An atom with atomic number 17 has 17 protons.
What does the Group number tell you about an atom?
The Group number tells you the number of valence electrons an atom has.
What are the six pieces of evidence that a chemical change may have occurred? (Hint: CGLTPO)
Color Change. Gas production. Light production. Temperature Change. Precipitate formed. Odor produced.
A student walking down the hall and turning right.
Acceleration
It requires more force to accelerate an elephant than it does to accelerate a mouse. Is this Law of Inertia, Law of F=MA, or Law of Action-Reaction?
Law of F=MA