WorksheetsPhysical Science Final Exam
Total questions: 31
Worksheet time: 31mins
The particles of a gas are packed tightly together.
True
False
Neither
I don't know
What is it called when a solid changes directly into a gas?
Liquid
Plasma
Sublimation
Cheese Pizza
What is the equation to find density?
Density = volume
y=mx+b
pie^2
p=m/V
What is the atomic number of O?
8
15.999
16
0
what is the atomic mass of O?
(a)
how many protons does
O have?
8
15.999
16
some atoms do not have a charge because
number of neutrons
the same number of electrons and protons
the same number of neutron and electrons
What is the charge of electrons?
-2
1
-5
-1
Protons have a charge of
-1
+1
+3
6
What is a product
the middle
the beging
the end of an equation
What separates the reactants and products in a chemical reaction?
stop sign
yield sign
green light
pavement
What is a reactant
the middle
the end
the first or beginning elements
beans
what is the answer?
2H2 + O2 → ????
3
4
2H5O3
2H2O
What is an ACID
a piece of cereal
they have a pH of less than 7
that have a pH of more than 7
what are bases
ph more than 7
ph less than 7
ph at 7
ph scale
what ph is a neutral?
3
5
11
7
What is an alpha particle?
2 protons 1 electron
an oxygen nucleus
+2 protons +2 neutrons
what is a beta particle
an electron emitted by an unstable nucleus
a penetrating ray of energy emitted by an unstable nucleus. (Gamma radiation has no mass and no charge)
charged particles and energy that are emitted from the nuclei of radioisotopes
After 42 days a 2.0 g sample of phosphorus-32 contains only 0.25 g of the isotope. What is the half-life of phosphorus-32?
28
14
2.0
12
A duck flies 60 meters in 10 seconds. What is the duck's speed?
40m/s
84m/s
6m/s
70m/s
Force is described as
a push or a pull
pull only
push only
all of these
What unit do scientists use to measure force?
grams
m/s
meters
newtons
The energy of motion is which type of energy?
kinetic
sound
electrical
If the amount of work was 10 joules and the force was 2.5 N what was the distance moved in meters
2.5m
66m
10m
4m
what is the unit of measurement for kinetic energy?
kilo
watt
newton
joule
In a transverse wave, the _______ is the lowest point.
medium
taco
crest
trough
when you squeeze the coils of a spring roll together, you cause a ___________
cheese
compression
my leg!
gizzmo
a period of 5.0 seconds corresponds to a frequency of_______ Hz
0.2
0.20
0.5
0.002
where is the strongest attraction force of the magnet?
at the poles
below
middle
box
how are electromagnets different from regular magnets?
strength can be changed
polarity can be reversed
turn on and off
all are right
what is the equation(s) for electricity
P=QVt=IV P = QV t = IV
cat water
y=mx+b
epi9
