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Quizzes > Physical & Natural Sciences

Introductory Chemistry Quiz

Free Practice Quiz & Exam Preparation

Difficulty: Moderate
Questions: 15
Study OutcomesAdditional Reading
3D voxel art representing Introductory Chemistry course material

Boost your chemistry fundamentals with our engaging practice quiz for Introductory Chemistry. This quiz covers essential concepts, chemical language, problem-solving techniques, and lab basics to prepare you for advanced studies, making it an ideal resource for students building a strong foundation in chemistry.

Which of the following best describes matter?
A substance that has mass and occupies space
A force that acts upon objects
Energy that is only visible during reactions
An abstract concept with no physical form
Which of the following best defines an element?
A pure substance made of only one type of atom
A compound composed of two or more different atoms
A mixture of homogeneous substances
A collection of molecules bonded together
How is the periodic table organized?
By increasing atomic number
By decreasing atomic weight
By alphabetical order of element names
By grouping elements with similar colors
What is a chemical reaction?
A process that transforms reactants into products by rearranging atoms
A physical mixing of substances without bond changes
An energy exchange without any substance transformation
A change only in the state of matter, such as melting
What unit is used to measure the amount of substance in chemistry?
Mole
Gram
Liter
Kelvin
Calculate the empirical formula for a compound with 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass.
CH2O
C2H4O2
CH4O
C3H8O3
What is the approximate molar mass of one water molecule (H2O)?
18 g/mol
16 g/mol
20 g/mol
17 g/mol
Which of the following best describes an isotope?
Atoms of the same element with different numbers of neutrons
Atoms of different elements that have the same atomic mass
Atoms with the same number of neutrons but different protons
Atoms with identical electron configurations
What is the balanced chemical equation for the reaction between sodium (Na) and chlorine gas (Cl2) to form sodium chloride (NaCl)?
2 Na + Cl2 → 2 NaCl
Na + Cl2 → NaCl2
Na + 2 Cl → NaCl
2 Na + 2 Cl → 2 NaCl
Which statement correctly describes covalent bonding?
They involve the sharing of electron pairs between atoms
They involve the complete transfer of electrons from one atom to another
They result in the formation of ionic compounds
They involve free electrons moving through a lattice of atoms
If a 10.0 g sample of a compound contains 3.0 g of element A, what is the percent composition of element A?
30%
3%
33%
0.3%
At standard temperature and pressure (STP), 2.0 liters of a gas is collected. How many moles of the gas are present?
0.089 moles
11.2 moles
2.0 moles
22.4 moles
What is primarily responsible for the periodic trends observed in atomic radius and ionization energy?
Variations in effective nuclear charge and electron configurations
Differences in molecular mass
Differences in the physical state of elements at room temperature
Variations in elemental color and luster
How is Avogadro's number best described?
It is the number of atoms or molecules in one mole of a substance, approximately 6.022 x 10^23
It is the number of protons in a standard atom
It is the conversion factor between mass and volume in gases
It is the atomic number of carbon
Which statement best explains the law of conservation of mass in a chemical reaction?
Mass is neither created nor destroyed, so the total mass of reactants equals the total mass of products
Mass increases due to the production of energy during the reaction
Mass decreases as some of it is converted into energy during the reaction
Mass changes unpredictably during chemical reactions
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Study Outcomes

  1. Define and explain fundamental chemical concepts and terminology.
  2. Apply basic mathematical principles to solve chemical problems.
  3. Interpret and analyze simple chemical reactions and equations.
  4. Demonstrate understanding of the properties and structure of matter.

Introductory Chemistry Additional Reading

Embarking on your chemistry journey? Here are some top-notch resources to guide you through the fascinating world of atoms and molecules:

  1. General Chemistry: Concept Development and Application This Coursera course from Rice University offers a comprehensive introduction to chemistry, covering topics from atomic structure to chemical reactions, all presented in an engaging and accessible manner.
  2. Introductory/Preparatory Chemistry Textbook Developed by Montgomery College, this textbook is tailored for beginners, providing clear explanations, colorful graphics, and a plethora of practice problems to solidify your understanding.
  3. Foundations of Introductory Chemistry Hosted on Chemistry LibreTexts, this resource delves into the fundamentals of chemistry, offering detailed chapters on topics like measurements, matter, and chemical reactions, complete with examples and exercises.
  4. Chemistry Course on Khan Academy Khan Academy provides a series of free video lessons and practice exercises covering a wide range of chemistry topics, perfect for self-paced learning and review.
  5. OpenStax Chemistry Textbook This free, peer-reviewed textbook offers a comprehensive overview of chemistry concepts, complete with real-world examples and practice problems to enhance your learning experience.
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