Question 1

states that the volume of a fixed quantity of gas maintained at constant temperature is inversely proportional to the pressure.

Accepted Answer

Boyle's Law

Answer

Charles' Law

Answer

Benedict's Law

Answer

Miles Morales' Law

Question 2

A gas at 1.0 atm of pressure occupies a volume of 2.0 L. What is the new volume occupied by the gas if the pressure is reduced to 0.5 atm? The temperature and amount of gas are held constant.

Accepted Answer

4.0 L

Answer

4.5 L

Answer

6.9 L

Answer

3.0 L

Question 3

states that the volume of a fixed amount of gas maintained at constant pressure is directly proportional to its absolute temperature.

Accepted Answer

Charles' Law

Answer

Miles Morales' Law

Answer

Benedict's Law

Answer

Boyle's Law

Question 4

A gas occupies a volume of 10.0 L at 300.0 K under constant pressure and amount of gas. If the temperature is increased to 500.0 K, what will be the new volume occupied by the gas?

Accepted Answer

16.67 L

Answer

100.0 L

Answer

16.00 L

Answer

16.69 L

Question 5

foods that include CARBOHYDRATES:

Accepted Answer

Pasta, Bread, Fruits, Vegetables, Sweets, Honey, Potato, Corn

Answer

Seafoods, Nuts, Vegetables, Mushroom

Answer

Butter, Nuts, Oil, Steroids, Cholesterol,

Answer

Seafood, Milk, Eggs, Cheese, Meat, Fish,

Question 6

foods that include PROTEINS:

Accepted Answer

Seafood, Milk, Eggs, Cheese, Meat, Fish,

Answer

Pasta, Bread, Fruits, Vegetables, Sweets, Honey, Potato, Corn

Answer

Seafoods, Nuts, Vegetables, Mushroom

Answer

Butter, Nuts, Oil, Steroids, Cholesterol,

Question 7

foods that include LIPIDS

Accepted Answer

Butter, Nuts, Oil, Steroids, Cholesterol,

Answer

Seafood, Milk, Eggs, Cheese, Meat, Fish,

Answer

Pasta, Bread, Fruits, Vegetables, Sweets, Honey, Potato, Corn

Answer

Seafoods, Nuts, Vegetables, Mushroom

Question 8

foods that include NUCLEIC ACID:

Accepted Answer

Seafoods, Nuts, Vegetables, Mushroom

Answer

Milk, Eggs, Cheese, Meat, Fish,

Answer

Butter, Nuts, Oil, Steroids, Cholesterol,

Answer

Pasta, Bread, Fruits, Vegetables, Sweets, Honey, Potato, Corn

Question 9

The most common organic molecule because they make up most plant matter

Accepted Answer

Biomolecules

Answer

Molecular Biology

Answer

Molecule Man

Answer

Atoms

Question 10

A sample of CO2 was confined to a container at a constant temperature, at a pressure of 3.50 atm., and the volume occupied is 4.50 L. How must pressure be exerted to decrease the volume of the gas to 3.00 L? (BOYLE'S LAW)

Accepted Answer

5.25 atm

Answer

5.24 atm

Answer

5.00 atm

Answer

5.23 atm

Question 11

Krypton gas occupies a volume of 1.75 L at 25.0°C. Determine the volume of the gas if the temperature is increased to 55.0°C considering that the pressure is constant. (CHARLES" LAW)

Accepted Answer

1.93 L

Answer

2.00 L

Answer

1.96 L

Answer

3.00 L

Question 12

What kind of test is used to determine the presence of carbohydrates in a food sample?

Accepted Answer

Benedict’s test

Answer

Grease spot test

Answer

Iodine test

Answer

Iodine test

Question 13

Which of the following statements best describes Collision Theory?

Accepted Answer

Atoms or molecules must collide with enough energy to react.

Answer

Smaller pieces have a greater surface area, thus, providing a much greater contact among the reactants and affect more collisions

Answer

Increasing the concentration of a reactant increases the rate of reaction. .

Answer

Catalyst can be recovered unchanged at the end of the process

Question 14

In DNA, what nitrogenous base will pair with "guanine" during replication and translation?

Accepted Answer

cytosine

Answer

adenine

Answer

thymine

Answer

guanine

Question 15

A double displacement reaction is represented by:

Accepted Answer

AB + CD → AD + CB

Answer

AB + C → CB + A

Answer

AB → A + B

Answer

A + B → AB

Question 16

Which of the following is an essential amino acid?

Accepted Answer

threonine

Answer

proline

Answer

cysteine

Answer

glutamic acid

Question 17

What is the BEST definition of a chemical reaction?

Accepted Answer

It is making and breaking bonds that cause the reorganization of molecules

Answer

When two things combine and explode.

Answer

It is a reaction that changes from solid to gas.

Answer

A change in matter that produces only one new substance.

Question 18

The following units are used in pressure EXCEPT:

Accepted Answer

cm3

Answer

torr

Answer

mmHg

Answer

atm

Question 19

Which of the following is NOT a factor affecting reaction rate?

Accepted Answer

polarity

Answer

temperature

Answer

particle size

Answer

catalysts

Question 20

Consider the chemical equation of Pb (s) + FeSO4 (aq) → PbSO4 (aq) + Fe (s). What type of reaction is involved?

Accepted Answer

Single Displacement Reaction

Answer

Combustion Reaction

Answer

Decomposition Reaction

Answer

Combination Reaction

Question 21

The substances listed on the left side of a chemical equation are the:

Accepted Answer

reactants

Answer

precipitates

Answer

coefficients

Answer

products

Question 22

The result of a chemical reaction is called

Accepted Answer

product

Answer

result

Answer

outcome

Answer

conclusion

Question 23

What property of a gas is described when molecules collide with one another and hit the walls of the container?

Accepted Answer

Pressure

Answer

Volume

Answer

Temperature

Answer

amount of gas

Question 24

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

Accepted Answer

A new substance is produced.

Answer

The shape of the coal changes.

Answer

Coal is made up of more than one element.

Answer

Oxygen is present.

Question 25

All the following are biomolecules except?

Accepted Answer

carboxylic acid

Answer

nucleic acid

Answer

protein

Answer

carbohydrates

Question 26

Which of the following statement is not the assumption of the kinetic molecular theory of gas?

Accepted Answer

The particles can attract nor repel each other

Answer

The particles are in constant random motions colliding with the walls of the container.

Answer

The average kinetic energy of gas particles is directly proportional to the temperature of the gas

Answer

Gases consist of tiny particles

Question 27

Why does a higher temperature increase the rate of a reaction?

Accepted Answer

it increases both the frequency and energy of particle collisions.

Answer

it reduces the activation energy of the reaction

Answer

it only increases the frequency of particle collisions

Answer

it only increases the energy of particle collisions.

Question 28

a chemical reaction between hydrocarbons reacting with oxygen gas that produce carbon dioxide and water.

Accepted Answer

Combustion Reaction

Answer

Chemical Reaction

Answer

Atomic Reaction

Answer

Chain Reaction

Question 29

It is a double replacement/displacement reaction but with specific reactants and products.

Accepted Answer

Acid-Base Reaction

Answer

Liquid-Base Reaction

Answer

Solid-Base Reaction

Answer

Plasma-Base Reaction

Question 30

any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so the quantity can neither be added nor be removed.

Accepted Answer

Law of conservation of mass

Answer

Law of thermodynamics

Answer

Law of conservation of energy

Answer

Laws of Physics

Question 31

What factor is shown when ripe fruits are placed inside a refrigerator to slow the ripening process?

Accepted Answer

effect of temperature

Answer

nature of the reacting substances

Answer

effect of pressure

Answer

concentration of the reactants

Question 32

How many kinds of elements are in C6H12O6?

Accepted Answer

3

Answer

5

Answer

2

Answer

1

Question 33

Which of the following statements best describes Collision Theory

Accepted Answer

Atoms or molecules must collide with enough energy to react

Answer

Increasing the concentration of a reactant increases the rate of reaction

Answer

Catalyst can be recovered unchanged at the end of the process

Answer

Smaller pieces have a greater surface area, thus, providing a much greater contact among the reactants and affect more collisions

Question 34

Perishable goods that are not properly stored show signs of spoilage in less than a day. Which of the following is not a possible cause of this spoilage?

Accepted Answer

the amount of goods

Answer

oxygen in air

Answer

change in temperature

Answer

presence of microorganisms

Question 35

Which of the following statement is not the assumption of the kinetic molecular theory of gas?

Accepted Answer

The particles can attract nor repel each other.

Answer

The particles are in constant random motions colliding with the walls of the container

Answer

Gases consist of tiny particles.

Answer

The average kinetic energy of gas particles is directly proportional to the temperature of the gas

Question 36

What happens to the reaction rate if the concentration of reactants decreases?

Accepted Answer

Reaction rate decreases

Answer

Reaction rate increases

Answer

Reaction rate will decrease and then increase after a while.

Answer

Reaction rate will increase and then increase after a while.

Question 37

Consider the chemical equation of Pb (s) + FeSO4 (aq) → PbSO4 (aq) + Fe (s). What type of reaction is involved?

Accepted Answer

Single Displacement Reaction

Answer

Combination Reaction

Answer

Decomposition Reaction

Answer

Combustion Reaction

Question 38

The following are the effects of excessive fuel use EXCEPT:

Accepted Answer

The planet will become colder as more fuel is used.

Answer

Too much use of fuel can produce more carbon dioxide

Answer

The overuse of fuel can be harmful to animals, plants, and people.

Answer

Excessive fuel use can contribute to global warming.

Question 39

How many kilograms of smoke are shown in the examples of conservation of mass?

Accepted Answer

3 kg

Answer

1 kg

Answer

31 kg

Answer

2 kg

Question 40

Combination reaction

Accepted Answer

A + B → AB

Answer

A + BC → AC + B

Answer

AB + CD → AD + CB

Answer

AB → A + B

Question 41

Decomposition reaction

Accepted Answer

AB → A + B

Answer

AB + CD → AD + CB

Answer

A + B → AB

Answer

X + O2→ CO2 + H2O

Question 42

Single replacement

Accepted Answer

A + BC → AC + B

Answer

AB + CD → AD + CB

Answer

A + B → AB

Answer

X + O2→ CO2 + H2O

Question 43

Double replacement

Accepted Answer

AB + CD → AD + CB

Answer

A + B → AB

Answer

X + O2→ CO2 + H2O

Answer

AB → A + B

Question 44

Combustion reaction

Accepted Answer

X + O2→ CO2 + H2O

Answer

A + BC → AC + B

Answer

A + B → AB

Answer

AB + CD → AD + CB

Question 45

°C ---> K

Accepted Answer

°C + 273

Answer

°C/273

Answer

°C+ 274

Answer

°C - 273

Question 46

K -----> °C

Accepted Answer

K - 273

Answer

K/275

Answer

K x 274

Answer

K + 273

Question 47

Which of the following is an essential amino acid?

Accepted Answer

threonine

Answer

glutamic acid

Answer

proline

Answer

insulin

Question 48

What kind of biomolecules are responsible for insulating and storing energy?

Accepted Answer

Lipids

Answer

Nucleic Acid

Answer

Protein

Answer

Carbohydrates

Question 49

If the temperature of a gas is held constant, the pressure and volume are:

Accepted Answer

inversely proportional

Answer

directly proportional

Answer

independent of each other

Answer

equal

Question 50

A gas occupies 900.0 mL at a temperature of 300.0 K. What is the volume at405.0 K?

Accepted Answer

1215.0 mL

Answer

1.6 mmHg

Answer

1200.5 mL

Answer

6.70 L

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