science final 😩😩
what family is period 7 outset of main table
Actinides
What is the chemical formula for aluminum nitride
AlN
What is an isotope
Atoms of the same element that have different numbers of neutrons
What type of bonding used prefixes in the name
Covalent
what's the chemical formula for cesium sulfide
CsS
What's the chemical formula for dihydrogen monoxide
H2O
What family is group 17
Halogens
independent variable
a variable (x) who's value does not depend on that of another (the cause in a cause and effect scenerio)
dependent variable
a variable (y) who's value depends on another (the effect in a cause and effect scenerio)
what family is group 1
alkali metals
What family is group 2
alkaline earth metals
newton's first law
an object in motion will stay in motion unless acted on by an outside force
Is oxygen a cation or anion?
anion (-2)
What element is group 15, period 6
bismuth
float
buoyancy > gravity
Is potassium a cation or anion?
cation (+1)
give the type and balance the equation: ___C6H12 + ___O2 --> ___CO2 + ___H2O
combustion 1C6H12 + 9O2 --> 6CO2 + 6H2O
what's H2O? element compound homogeneous mix heterogeneous mix
compound
what type of bond will phosphorus and oxygen make
covalent
prefix for 10
deca
prefix for 2
di
give the type and balance the equation: ___NaBr + ___Ca(OH)2 —> ___ CaBr2 + ___NaOH
double replacement
find the net force : (pretend this is in diagram form) left 8N up 2N right 8N down 5N
down 3N
how many electrons, protons, and neutrons will an atom of arsenic-77 have
electrons- 33 protons- 33 neutrons- 44
how many electrons, protons, and neutrons will an ion of barium-136 have?
electrons- 54 protons- 56 neutrons- 80
what's carbon? element compound homogeneous mix heterogeneous mix
element
describe what happens at the molecular level when H2O changes from steam to liquid water to ice
energy slows down, temp decreases, and IM forces increase
newton's second law
f = m x a
newton's third law
for every action there is an equal and opposite reaction
three states of matter from most compressible to least compressible
gas -> liquid -> solid
list all types of potential energy with examples
gravitational - a car parked at the top of a hill chemical - charged battery nuclear - nuclear fission elastic - stretched rubber band electrical - a TV before it is turned on
non-contanct forces
gravitational force, magnetic force, nuclear force, and electrostatic force
sink
gravity > buoyancy
prefix for 7
hepta
what's iced coffee? element compound homogeneous mix heterogeneous mix
heterogeneous mix
prefix for 6
hexa
difference between heterogeneous and homogeneous mixtures
homogeneous is unified while heterogeneous is obviously separate substances
what's brass? element compound homogeneous mix heterogeneous mix
homogeneous mix
Where are neutrons located?
inside the nucleus
Where are protons located?
inside the nucleus
what type of bond will calcium and iodine make
ionic
Group 1 will ___ valence electrons and make a ____ charge called a ____
lose, positive, catiion
prefix for 1
mono
What family is group 18
noble gases
prefix for 9
nona
an ionic bond is
nonmetal and metal
A covalent bond is
nonmetal and nonmetal
contact forces
normal force, spring force, applied force, and tension force
atomic number is equal to
number of protons
prefix for 8
octa
the prefix mono is used
only on the second element
Where are electrons located?
outside the nucleus
prefix for 5
penta
four states of matter from highest molecule speed to lowest
plasma, gas, liquid, solid
precision vs accuracy
precision is how close the measurements are to each other while accuracy is how close a measurement is to the true value
The mass number is equal to
protons + neutrons
general order of the scientific method
question, research, hypothesis, experiment, data/analysis, conclusion
inertia
a tendency to do nothing or remain unchanged
Charge for proton
+1
Magnesium will make what charge
+2
what charge will calcium make
+2
What charge will bromine make
-1
charge for an electron
-1
Phosphorus will make what charge
-3
Charge for neutron
0
How many valence electrons does hydrogen have
1
significant figures rules
1. all nonzero numbers are significant 2. when a zero falls between two nonzero numbers, that zero is significant 3. leading zeroes are NOT significant 4. trailing zeroes to the right of a decimal are significant 5. trailing zeroes in a whole number with a decimal are significant 6. trailing zeroes in a whole number with no decimals are not significant 7. numbers in measurements are all significant 8. in scientific notation, the entire first number is significant
How many atoms of H are in 5Fe(CH5)2
10
give the correct, rounded answer 45.78 - 23.3 - 12
10
find the missing force: (pretend this is in diagram form) total FNet: right 6N left 7N up 1N down 1N right ??
13N
How many atoms of C are in Fe(CH5)2
2
how many valence electrons does magnesium have
2
How many atoms of Fe are in 3Fe(CH5)2
3
How many valence electrons does arsenic have
5
find the missing force: (pretend this is in diagram form) total FNet: up 2N left: 4N right: 4N down: 3N up: ??
5N
give the correct, rounded answer 29.00/0.45
64
How many valence electrons does radon have
8
What family is period 6 outset of main table
Lanthanides
What's the chemical name for LiF3
Lithium Fluoride
What element is period 5, group 5
Niobium
what's the chemical name for NO
Nitrogen Monoxide
is the scientific method a linear process?
No. Based on your results, you must either modify your hypothesis or replicate your results through further experimentation.
What is the chemical formula for hexaphosphorus noniodide
P6I9
What is the chemical name for Na2O
Sodium Oxide
What family is group 3-12
Transition metals
what's the chemical name for S3Br8
Trisulfur Octabromide
constant
a quantity that does not change
Compare and contrast the density and buoyancy of seawater vs freshwater
seawater is denser than freshwater objects in salt water are more buoyant than objects in fresh water
give the type and balance the equation: ___NH3 + ___I2 —> ___N2I6 + ___H2
single replacement 4NH3 + 6I2 —> 2N2I6 + 6H2
four states of matter from highest IM forces to least IM forces
solid -> liquid -> gas -> plasma
give the type and balance the equation: ___H2O + ___SO3 —> ___H2SO4
synthesis 1H2O + 1SO3 —> 1H2SO4
prefix for 4
tetra
experimental group
the group that receives the treatment/participates in the experiment
prefix for 3
tri
find the net force : (pretend this is in diagram form) up 19N down 5N
up 14N
Buoyancy is defined as the __________ force from a _________ onto an object
upward, solid
control group
used as a benchmark to compare back to
in an experiment, should there always be a control group?
yes. without a control group, it's harder to be certain that the outcome was caused by the experimental treatment and not by other variables