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WorksheetsReview Day 2
Total questions: 31
Worksheet time: 3585secs
Cold things often have a _________ kinetic energy because_______
lower; particles are moving around less
lower; particles are moving around more
higher; particles are moving around the same
higher; particles do not move
A pupil has a 2 balloons of Nitrogen gas. She places one in the fridge and one in the oven. What will happen to the balloons?
The fridge balloon will shrink and the oven balloon will expand
The fridge balloon will shrink and the oven balloon will shrink
The fridge balloon will expand and the oven balloon will shrink
The fridge balloon will expand and the oven balloon will expand
If a chemical cannot be broken down or separated into other chemicals it could be best described as
a solution
a mixture
an element
a compound
Which of the following is an element?
H
NaOH
CO2
H2O
Which of the following is a compound?
H2O
Mg
O
C
Which atom below would be most likely to form a compound with magnesium (Mg) in a ratio of one to one?
chlorine (Cl)
oxygen (O)
calcium (Ca)
nitrogen (N)
Which of these will increase as material is heated and change temperature?
kinetic energy of the molecules
potential energy of the molecules
the charge of the atoms in the molecules
the mass of the molecules
If a gas changes to a liquid what will happen to energy during this process?
It is destroyed.
It is created.
It is released.
It is absorbed.
What is happening to the particles in the substance between points A and B?
Melting
Freezing
Speeding Up
Slowing Down
The following graph illustrates what kind of Relationship between Pressure and Volume?
Direct
Positive Slope
Indirect
As pressure increases, volume increases
The following graph illustrates what kind of RELATIONSHIP between pressure and temperature?
Direct
Inverse
Indirect
Negative Slope
three hydrogen (H)
one sulfur (S)
four oxygen (O)
How many different elements are present in H2COCH2
5
4
3
2
Shows the types and numbers of atoms combined in a single molecule of a molecular compound
molecular formula
covalent bond
ionic bond
molecules
Smallest particle of an element
atomic symbol
ion
atom
isotope
In Group 1, every element has just 1 e- in the valence (outer) shell. What will they do to become "happier" stable?
give up 1 e- in order to reach the closed shell underneath.
share 1 e- in order to reach the closed shell underneath.
take 1 e- in order to reach the closed shell underneath.
return 1 e- in order to reach the closed shell underneath.
How many moles are in 15.0 g of lithium?
104 mol
2.16 mol
6.94 mol
15.0 mol
Pb(NO3)2
How many molecules are in 150.0g if Na2SO4?
9.03x1025 molecules
1.056 molecules
6.357x1023 molecules
5.701x1023 molecules
What is Avogadro's number?
6.02 x 1023
1 mole
600 million
6.02
How many moles are in 4.5 x 1024 atoms of lithium?
2.71 x 1048 particles
7.47 moles
7.47 x 1024 atoms
2.71 moles
At Standard Temperature and Pressure (STP), 1 mole of a given gas will be equal to...
1000 L of the gas.
1 billion atoms.
6.22 L of the gas.
22.4 L of the gas.
Endothermic reactions are reactions that require more energy to start than they give off in the products. Which statement describes an endothermic reaction?
It gives off water and is wet to the touch
It gives off light energy and produces visible light.
It absorbs heat energy and is cold to the touch.
It gives off heat energy and is hot to the touch.
How many molecules of water are in a 821.3 g sample?
45.58 molecules
8.232 x 1025 molecules
8.909 x 1027 molecules
2.744 x 1025 molecules
How many moles of sodium chloride are in a 321.8 g sample?
18810 moles
3.315 x 1024 moles
5.507 moles
4.767 moles
