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Chemistry 1
Chemistry 2
Surprise
Physics 1
Physics 2
100
What are signs of a chemical reaction
Color change, Temperature change, Precipitate formed, Odor change, gas produced.
100
compare the mass of protons and neutrons and electrons
protons and neutrons both weigh 1 amu but the electron is 1/2000 of an amu
100
what law compares the mass and acceleration of objects
f=ma 2nd law-law of mass and acceleration
100
when an object is acted on by an unbalanced force it will always
accelerate
100
A horizontal line on a distance/time graph means...
the object is stopped
200
What do protons and neutrons have in common
they are both 1 amu and are in the nucleus
200
what determines an atoms reactivity
valence electrons
200
what is acceleration
a change in speed or direction
200
the main difference between velocity and speed is
velocity gives a direction
200
If it has a constant speed in the same direction then the acceleration would be
ZERO
300
what do protons and electrons have in common
both determine the charge of an atom
300
how reactive is group 1
EXTREMELY
300
what determines an element's identity
protons
300
what do speed and velocity have in common
both tell how fast a object is moving
300
On a track where would the object be acceleration
at the curves because it's changing direction.
400
how do you find the mass of a atom
add the protons and neutrons
400
is group 1 made of metals or non-metals
metals
400
what is the thing that organizes the elements
periodic table
400
what causes a moving object to stop on earth
friction
400
is the velocity the same at any section of a track
no constantly changing
500
Where is the most of the volume in an atom found
the nucleus
500
which group does not react with anything
Group 18 the noble gases
500
write the equation for the product of rust (Fe2O3)
3O2+4Fe->2Fe2O3
500
if 2 objects are being pushed with the same amount of force how would the accelerations be different
one objects has more mass
500
what would happen if your car suddenly stop
you would fly forward