The matter is composed of?

Very small particles called atoms

Various components of cells that create energy

Why do we categorize elements?

So that elements can be understood by their structure and placement in the universe

There are dates in which they were founded and it is easier to know which ones came first.

Chemistry 101: Practice Quiz! Trivia Exam

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Quizzes Created: 1 | Total Attempts: 4,214

Questions: 12 | Attempts: 4,231 | Updated: Mar 22, 2023

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Chemistry 101: Practice Quiz! Trivia Exam - Quiz

Do you think you can pass this chemistry practice quiz? Safety is one of the more practical benefits of studying chemistry. It teaches you what happens when you mix certain chemicals, and it tells us what is hazardous and what is safe. New developments in chemistry have also led to improved sanitation and hygiene technologies, such as clean drinking water. This quiz will guide you on your journey of learning about chemistry.

Questions and Answers

1.

The matter is composed of?
- A.
  
  Electrons
- B.
  
  Very small particles called atoms
- C.
  
  Various components of cells that create energy
Correct Answer
B. Very small particles called atoms

Explanation
Matter is composed of very small particles called atoms. Atoms are the basic building blocks of matter and are made up of even smaller particles such as protons, neutrons, and electrons. These atoms combine together to form molecules, which in turn make up all the substances and materials around us.

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1
0
2.

Matter cannot be:
- A.
  
  Broken into smaller bits
- B.
  
  Part of the earth
- C.
  
  Created nor destroyed
Correct Answer
C. Created nor destroyed

Explanation
Matter cannot be created nor destroyed because of the law of conservation of mass. This law states that the total mass of a closed system remains constant over time, regardless of any physical or chemical changes that may occur. Therefore, matter can only change its form or be rearranged, but it cannot be created or destroyed. This principle is fundamental to understanding the behavior of matter in various physical and chemical processes.

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3
0
3.

Which of the following is the best conductor of electricity?
- A.
  
  Metals
- B.
  
  Non-Metals
- C.
  
  Transition Metals
Correct Answer
A. Metals

Explanation
Metals are the best conductors of electricity because they have a high number of free electrons that are able to move easily through the material. This allows for the efficient flow of electric current. Non-metals, on the other hand, do not have many free electrons and therefore do not conduct electricity well. Transition metals, although they have some properties of both metals and non-metals, are still better conductors than non-metals but not as good as regular metals.

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4.

Which of the following elements are not metal?
- A.
  
  Fe
- B.
  
  Ti
- C.
  
  Xe
Correct Answer
C. Xe

Explanation
Xe is not a metal because it is a noble gas. Noble gases are a group of elements that are known for their low reactivity and full outer electron shells, making them stable and non-metallic in nature. In contrast, Fe (iron) and Ti (titanium) are both transition metals, which are known for their high reactivity, ability to form positive ions, and metallic properties.

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5.

Which type of element is brittle when it is solid?
- A.
  
  Metal
- B.
  
  Non-Metal
- C.
  
  Gap Metal
Correct Answer
B. Non-Metal

Explanation
Non-metals are typically brittle when they are in solid form. Unlike metals, which are malleable and can be easily shaped, non-metals tend to be rigid and breakable. This is because non-metals have a higher tendency to form covalent bonds, which are strong but inflexible. As a result, non-metallic solids are more likely to fracture or shatter when subjected to stress or pressure.

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2
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6.

Elements in a group tend to be?
- A.
  
  More similar chemically
- B.
  
  Less similar chemically
- C.
  
  Not similar at all chemically
Correct Answer
A. More similar chemically

Explanation
Elements in a group tend to be more similar chemically because they have the same number of valence electrons. Valence electrons are responsible for the chemical behavior of elements, and elements in the same group have the same number of valence electrons. This similarity in electron configuration leads to similar chemical properties and reactivity among elements in a group.

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7.

Which of the following are elements in Period 7?
- A.
  
  F
- B.
  
  Cl
- C.
  
  Br
- D.
  
  Fe
Correct Answer(s)
A. F
B. Cl
C. Br

Explanation
The elements F, Cl, and Br are all elements in Period 7. Period 7 of the periodic table consists of elements with atomic numbers 87 to 104. F represents fluorine, Cl represents chlorine, and Br represents bromine, all of which fall within this range of atomic numbers. Fe, on the other hand, represents iron, which is not an element in Period 7.

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1
1
8.

Why do we categorize elements?
- A.
  
  So it looks pretty
- B.
  
  So that elements can be understood by their structure and placement in the universe
- C.
  
  There are dates in which they were founded and it is easier to know which ones came first.
Correct Answer
B. So that elements can be understood by their structure and placement in the universe

Explanation
We categorize elements so that we can understand them better by analyzing their structure and placement in the universe. By grouping elements based on their properties and characteristics, we can make predictions about their behavior and interactions with other elements. This classification system also helps in organizing and studying the vast number of elements that exist, making it easier to identify patterns and trends in their properties.

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1
0
9.

The periodic table shows a total of _______ metalloids.

Correct Answer
8 14 7

Explanation
The periodic table shows a total of 8 metalloids. Metalloids are elements that have properties of both metals and nonmetals. They are found in a diagonal line on the periodic table, separating the metals from the nonmetals. There are 8 elements in this line, which are commonly referred to as metalloids.

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2
4 4
10.

Al3+ + 3CH3COO- →
- A.
  
  Al2(CO3)3
- B.
  
  AlCl3
- C.
  
  (CH3COO)3Al
Correct Answer
C. (CH3COO)3Al

Explanation
The given reaction involves the combination of Al3+ ions with CH3COO- ions. The balanced equation for this reaction is: Al3+ + 3CH3COO- → (CH3COO)3Al. This indicates that three CH3COO- ions combine with one Al3+ ion to form (CH3COO)3Al. Therefore, the correct answer is (CH3COO)3Al.

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11.

The periodic table is made up of elements that are arranged by?
- A.
  
  Groups and periods
- B.
  
  Periods and compounds
- C.
  
  Families and elements
Correct Answer
A. Groups and periods

Explanation
The periodic table is made up of elements that are arranged by groups and periods. Groups are the vertical columns on the table and represent elements with similar properties. Periods are the horizontal rows and represent the energy levels or shells of the elements. This arrangement allows for easy classification and organization of the elements based on their atomic structure and properties.

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12.

The bottom number in each elemental box is the
- A.
  
  Atomic number
- B.
  
  Number of protons
- C.
  
  Atomic Mass
Correct Answer
C. Atomic Mass

Explanation
The bottom number in each elemental box represents the atomic mass. The atomic mass is the average mass of all the isotopes of an element, taking into account their abundance. It is calculated by multiplying the mass of each isotope by its abundance and adding them together. The atomic mass is important for determining the amount of an element in a given sample and for understanding the periodic table and its patterns.

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Chemistry 101: Practice Quiz! Trivia Exam

The matter is composed of?

Matter cannot be:

Which of the following is the best conductor of electricity?

Which of the following elements are not metal?

Which type of element is brittle when it is solid?

Elements in a group tend to be?

Which of the following are elements in Period 7?

Why do we categorize elements?

The periodic table shows a total of _______ metalloids.

Al3+ + 3CH3COO- →

The periodic table is made up of elements that are arranged by?

The bottom number in each elemental box is the