unit conversion
density problems
(matter)
Isotope
misellaniuous
100
The unit measure for Speed?
M/s or Miles /h or km/h
100
what is the density of a cube with mass of 300 g and volume of 3000 cm3?
0.1 g/ cm3
100
Trial mix is a
a) homogenous
b) heterogenous
c) colloid
d) not known
heterogenous mixture
100
when an element has different isotopes, it means
a) there are different versions of this element with different # of electrons.
b) there are different versions of this element with different # of protons.
c) there are different versions of this element with different # of neutrons.
there are different versions of this element with different # of neutrons.
100
Is it an atom or molecule?
NaCl
Molecule
200
How many liters are in 5612 Milliliters?
we are going small to big, milliliters to liters.
we need to divide.
answer is 5.612 liters.
200
What is the density of a liquid with volume of 12ml and 120 grams of mass?
10 g/liter
200
What is a solute?
a substance that get s dissolved.
200
An isotope of iodine has atomic mass or 123. How many neutrons does it have ?
70
because 123- 53 = 70
200
How many oxygen atoms are here in this molecule?
2H2SO4
8
300
how many meters are 5600 millimeters?
5.6 meters
300
What is the density of a cube that has one of the dimension at 2.5 cm and mass of 1560 grams?
100 gr/cm3
300
The main difference between a solution and colloid and a suspension is
difference in particle sizes in solution , suspension and colloid
300
An Isotope of Pb has atomic mass of 209. How many protons it has?
82
300
Is it a cation or anion or a neutral atom?
Cation
400
How many kg is 0.00234 milligrams?
0.00000000234. or 2.34 x 10 -9
400
What is the volume of an object that has mass of 250 g and density of 13.7 gr/cm3?
18.2 cm3
400
is it a homogenous or heterogenous mixture?
homogenous mixture
400
Pb-209, how many neutrons it has?
209-82 = 127
400
This is a density graph of substance A. If substance B has a higher density than substance A, where would you draw a line representing density of substance B? on top or below the line shown ?
c
500
How many meters are in 0.0234 decimeters ?
0.00234
500
What is the mass of an object that displaces 420 milliliter of water and has density of 10 g/ml?
4200 g
500
is air
a) compound
b) mixture
c) element
mixture
500
If an isotope of Carbon has 6 protons and 8 neutrons, what is atomic mass of this type of Carbon?
14
500
Is one kg of feather is more dense or one kg of bricks?
One Kg of Bricks