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WorksheetsScience quiz #2
Total questions: 21
Worksheet time: 5hrs 15mins
\431 The table shows models of four molecules and describes the atomic composition of each molecule.
a. Based on the information on the table, describe the atomic composition of methane. Use specific information from the table to explain your reasoning.
(a)
b. The atomic composition of carbon monoxide is one carbon atom and one oxygen atom. Using the models in the table as examples, describe a model of carbon monoxide.
(a)
2 Model X and Model Y both represent particles of the same substance.
a. Identify the states of matter represented by Model X and Model Y. Support your answers with evidence from the models.
(a)
b. Describe a third model that would represent the particles of the same substance in a state of matter not represented by Model X or Model Y. Explain your reasoning.
(a)
Jocelyn made these drawings to show the balloon's diameter at room temperature and immediately after removing it from the freezer. The dotted line represents the size of the balloon before placing it in the freezer.
It would pop because of the heat towards the balloon
It would deflate than 10 cm because of the heat making it deflate
The ballon would become bigger than 10 cm because of the heat making it inflate
Nothing happens
4 The table shows three models that represent a different molecule each. Information on each molecule is given in the table.
Match each element to the atom model used to represent it.
Hydrogen is white, Nitrogen is striped, Carbon is grey, and Oxygen is dots.
Hydrogen is dots, carbon is striped, oxygen is white, and Nitrogen is grey.
They are all dots
Hydrogen is black, nitrogen is white, carbon is dots, and oxygen is striped
5 What changes are likely to happen to the particles inside a beaker with liquid water as thermal energy is removed?
Particles will move faster and get far apart.
The particles will slow down and come close together.
Nothing will happen to the particles
The particles will get faster but close together
6 Aspartame is an artificial sweetener; its formula is C13H16N2O5. What element in the formula has the most number of atoms?
O is the element with the most number of atoms
N is the element with the most number of atoms
C is the element with the most number of atoms
H is the element with the most number of atoms
7 In general, nonmetals are ____ since they are composed of individual atoms or small molecules.
None of the above
Solid at room temperature
Gas at room temperature
Thermal energy
8 Ethanol has six hydrogen atoms, two carbon atoms, and one oxygen atom. Which is the correct chemical formula of the model below?
C4 H7 O
C2 H6 O
H6 C2 O
O3 H8 C10
9 A change in the state of matter occurs if enough _____ is added or removed from an object
Thermal energy
Kinetic energy
Heat
Potential energy
10 When a liquid boils, its particles get____This may be due to the____ in pressure.
Hot, thermal energy
Closer together, increase
Farther apart, decrease
Cold, kinetic energy
11 Vaporization occurs when a____changes into a____
Liquid, heat
Solid, gas
Solid, liquid
Liquid, gas
12 In which state of matter are there very weak attractions between particles?
Solid
Gas
Liquid
Ice
13 In a gas, which quantities relate in such a way that when one increases, the other one decreases?
Gas, solid
Pressure, solid
When volume increases the pressure decreases (Volume, and Pressure)
Liquid, volume
14 The sum of all the potential energy and kinetic energy of an object equals its _____.
Potential energy
Kinetic energy
Mechanical energy
Thermal energy
In a chemical formula, the number of each type of atom in the compound is shown with numbers that are ____.
Atomic number
Atom
Subscript
Number
16 The forces of attraction between the particles of a matter sample are strong and draw particles together, keeping them in their place. This is an example _____.
Solid State of Matter
Gas state of matter
Liquid state of matter
Air pressure state of matter
17 Juana is creating a lab simulation about the movement of the particles in a nonmetal gas. The user can change the pressure in the gas' temperature and see the effect of the change in the gas' volume. What changes should Juana program to cause the decrease in the gas' volume?
Increase the pressure
Decrease the pressure
The pressure is fine
Increase the volume
18 The measure of the average kinetic energy of the particles in a material is ____,, while the result of the motion of all the particles, and the distance and attractions between those particles in the system is ____Energy
Liquid, mechanical energy
Solid, potential energy
Heat, kinetic energy
Temperature, Thermal Energy
19 In general, metals are ____ since they are composed of individual atoms or small molecules.
Good conductors of heat
Malleable
Stiff
Hard
