General Chemistry Placement Practice Test

These questions are part of the practice quiz. Start practicing

• In nuclear chemistry, what is a half-life?
• What is the atomic number of an element?
• Which of the following describes the hydronium ion (H3O+)?
• What is a necessary condition for a double replacement reaction to occur?
• What is an ion?
• Which of the following can be an indicator of a higher average kinetic energy in a substance?
• What type of bond constitutes a saturated hydrocarbon?
• What type of elements typically participate in covalent bonding?
• What is a diatomic molecule?
• When the volume of a gas increases, what happens to its pressure?
• What is the naming convention for ketones?
• Which particle does not have a charge?
• What defines an organic alcohol?
• In terms of energy, what does low enthalpy typically represent in a system?
• What characterizes a single replacement reaction?
• Which type of materials are typically characterized by their ability to form colored compounds?
• What role does a catalyst play in a chemical reaction?
• Which of the following best describes metalloids?
• What is a defining characteristic of an ionic compound?
• Which property is specific to every element and can be measured?
• Which trend is observed in electronegativity across the periodic table?
• What characterizes metallic bonds?
• Who created the first periodic table?
• What characteristic defines a solid compared to other states of matter?
• What is defined as the energy required to initiate a reaction?
• To ensure accurate results, how many variables should be tested at once in scientific experiments?
• What type of electrons are located in the outermost energy level of an atom?
• In chemistry, what does adhesion refer to?
• According to collision theory, what must happen for a reaction to occur?
• What represents the heat of reaction?
• What is a periodic trend?
• What does a chemical formula represent?
• What type of functional group identifies an organic compound as an alcohol?
• In a neutral atom, how do the number of protons compare to the number of electrons?
• What is a compound?
• What does a chemical symbol consist of?
• What type of subatomic particle is found in the nucleus of an atom and carries a positive charge?
• What role does a catalyst play in a chemical reaction?
• What is formed when an atom loses an electron?
• What type of elements are found in Group 17 of the periodic table?
• Which of the following compounds contains a carbonyl group?
• Which term describes a mixture in which different materials can be easily identified?
• What is the primary feature of noble gases regarding their reactivity?
• What is unique about oxidation-reduction (redox) reactions?
• What property describes how matter reacts when it undergoes a chemical change?
• What characterizes a saturated solution?
• Which type of reaction involves the combination of two or more substances to form a new compound?
• In a solution, what is referred to as the solvent?
• How is molar mass defined?
• What is meant by the term "activation energy"?
• What distinguishes an endothermic reaction from an exothermic reaction?
• What does each period in the periodic table correspond to?
• Which of the following are the main states of matter?
• What is the definition of molarity in a solution?
• What is the nucleus of an atom primarily composed of?
• Which of the following would increase the rate of solubility?
• Who proposed that all matter is composed of tiny particles called atoms?
• What characterizes transition metals?
• What term describes a solution with a high concentration of hydroxide ions?
• How does the periodic table function in chemistry?
• What type of mixture allows different materials to be easily seen?
• What does electronegativity measure?
• What role does water play in acid-base reactions?
• What is a distinguishing feature of a saturated solution?
• Which field of study focuses on chemicals containing carbon?
• What is meant by a linear molecule?
• Which philosopher's ideas contributed to the concept of atoms?
• How is average kinetic energy related to temperature?
• What does the ideal gas law describe?
• How are elements arranged in the modern periodic table?
• How does the mass of neutrons compare to that of protons?
• What is an alkane?
• What defines an alkene?
• What does reduction mean in a redox reaction?
• What is the mass (in amu) of a proton generally considered to be?
• Which state of matter can be described as having particles that are far apart and moving freely?
• What physical property is most commonly associated with nonmetals and group 18 elements?
• What does a chemical property NOT typically include?
• What is an example of a synthesis reaction?
• In a reaction involving NaCl, how many particles are produced when it dissolves?
• Which describes a double replacement reaction?
• What is a solubility product constant (Ksp)?
• Which factor does NOT affect solubility according to Ksp?
• Which of the following best describes an element?
• What is a defining characteristic of transition metals in terms of their ions?
• What does it mean for a substance to be soluble?
• Which of the following best describes the characteristics of polymers?
• Which elements are typically poor conductors of heat and electricity, and are generally gases or brittle solids?
• What are neutrons classified as in terms of charge?
• What is a peptide bond?
• What does electronegativity refer to?
• What is ionization energy?
• What characterizes a mixture?
• What does pH measure?
• What defines an ion?
• In terms of chemical properties, how do alkali earth metals behave compared to alkali metals?
• What does the term 'solute' refer to in a solution?
• What is chemical equilibrium?
• In gas laws, what happens when volume decreases, according to the principles of pressure-volume relationship?
• What does an empirical formula represent?
• Which particle is primarily responsible for determining the charge of an ion?
• What is a common property of metals?
• What state of matter has no definite shape or volume?
• What is favored by nature regarding entropy?
• Which of the following statements best describes the relationship between protons and neutrons in an atom?
• What term describes atoms of the same element that have different masses due to varying numbers of neutrons?
• Which group of elements is known for having two valence electrons and forming +2 ions?
• How is pH calculated?
• What is the octet rule?
• What would describe an element located in a group with similar valence electrons?
• Which model of the atom describes electrons in "orbitals" like clouds around the nucleus?
• What characterizes an acidic solution?
• How can a compound be decomposed?
• What term describes the phase change from solid to gas?
• Which description best fits a liquid?
• What does dipole moment measure?
• What was JJ Thomson's significant contribution to atomic theory?
• What does a bright line spectrum display?
• What trend is observed in ionization energy as you move down a group in the periodic table?
• What does it mean for a solution to be supersaturated?
• What type of elements are characterized by high ionization energy and high electronegativity?
• What primarily distinguishes alkali metals from alkali earth metals?
• Which of the following is a characteristic of an alkyne?
• What does a mole measure in chemistry?
• What happens to the position of equilibrium when the concentration of a product is increased according to Le Chatelier's principle?
• Which change is an example of a physical change?
• What are isomers defined as in chemistry?
• Which statement about buffer solutions is true?
• Which of the following is a property of a homogeneous mixture?
• What can an anion indicate about an element's behavior?
• What does the law of conservation of mass state?
• What visual model is used to represent the structure of atoms, resembling planets orbiting the sun?
• What are the characteristics of elements found in Group 1 of the periodic table?
• What does kinetic molecular theory describe?
• What is the significance of ionization energy in periodic trends?
• What happens to the volume of a gas when it is heated at constant pressure, according to Charles's Law?
• Which group is known as the noble gases and is characterized by having a full octet of valence electrons?
• What is an amorphous solid?
• Which term describes the property used to identify or recognize matter?
• What role do electrons play in chemical bonding?
• Which of the following increases reaction rates according to kinetic molecular theory?
• Which state of matter has a definite shape and volume?
• Which hydrocarbon type has both single and double bonds?
• How is a "solution" defined in chemistry?
• Which of the following is a crucial aspect of the scientific method?
• What is an anion?
• What is a covalent bond?
• Which particle is characterized as negatively charged and orbits the nucleus of an atom?
• What type of hydrocarbons are fully saturated with hydrogen?
• Which of the following best describes a Lewis acid?
• Which functional group is characteristic of organic aldehydes?
• What type of bonds are present in a saturated hydrocarbon?
• Which of the following is an example of a diatomic molecule?
• What is the process called that separates a solid precipitate from a liquid?
• What defines matter?
• Which of the following groups contains elements that are mostly diatomic gases?
• What is the purpose of titration in chemistry?
• What is Le Chatelier's principle?
• Which of the following substances is most likely a heterogeneous mixture?
• What is the implication of the activation energy being high for a reaction?
• In a synthesis reaction, two or more reactants combine to form what?
• Which subatomic particle is positively charged?
• What class of organic compounds does not have a defined structure?
• How is an ionic bond formed?
• What is meant by the term "polyatomic ion"?
• What is the difference between a hypothesis and a theory?
• What defines a strong acid?
• What is called the energy levels around the nucleus of an atom?
• Which of the following statements best describes enthalpy?
• What does Charles's Law state about gases?
• What is an anion?
• Which of the following describes an unsaturated solution?
• What is referred to when discussing enthalpy in a chemical reaction?
• How does an empirical formula differ from a molecular formula?
• What do the groups in the periodic table represent?
• What do molecular compounds usually involve when being written?
• Which prefix denotes the presence of two atoms in molecular substances?
• What conditions define an ideal gas?
• What does a physical/phase change involve?
• Which of the following best describes a buffer solution?
• What is the formula for an ethyl group?
• Which of the following elements are the only two liquids on the periodic table at room temperature?
• Which hydrocarbon type is characterized by having carbon-to-carbon double bonds?
• What is a physical property of a substance?
• How can the number of neutrons in an atom be calculated?
• Which of the following is NOT a physical property?
• In the context of redox reactions, what does oxidation refer to?
• What property do nonmetals share regarding their physical state at room temperature?
• Which of the following properties characterize metals?
• Which of the following is an example of a homogeneous mixture?
• In a vapor pressure table, what does the dotted line typically represent?
• What example best illustrates a physical property?
• Which of the following is an example of a decomposition reaction?
• Which state's molecule arrangement allows it to maintain a definite volume?
• When does a chemical reaction release energy?
• Which of the following is NOT a characteristic of ionic compounds?
• What defines a strong base?
• What term is used to describe an atom that has lost electrons and carries a positive charge?
• What do Lewis dot structures represent?
• What are Lewis structures used for in chemistry?
• What does the atomic number of an element represent?
• What property do gases exhibit when placed in a container?
• What does entropy measure in a chemical system?
• In a decomposition reaction, what occurs to a single compound?
• What happens to the temperature during an exothermic reaction?
• Which group of the periodic table do alkaline earth metals belong to?
• What are isotopes?
• Which of the following is an example of a covalent bond?
• What characterizes a saturated hydrocarbon?
• As you move from left to right across a period in the periodic table, what generally happens to the electronegativity?
• What is an essential condition in the definition of an ideal gas?
• What happens to boiling point (BP) and freezing point (FP) as the number of solute particles increases?
• What does a chemical equation represent in terms of atoms?
• What defines an alkaline earth metal?
• Colligative properties are affected by what aspect of the solute?
• Which of the following particles is found in the nucleus and is neutral?
• What occurs during a chemical reaction?
• What is the correct method for writing ionic compounds?
• What are structural isomers?
• Which experiment did Rutherford conduct to demonstrate that atoms are mostly empty space?
• What is the significance of the 180-degree bond angle in a linear molecule?
• What relationship exists between the volume and temperature of a gas?
• What does the symbol (aq) represent in a chemical equation?
• Which of the following statements is true regarding protons?
• What is an example of a pure substance?
• How is enthalpy best defined?
• What does Brønsted-Lowry acid-base theory state?
• What effect does temperature have on chemical reaction rates?
• What can be said about the components of a compound?
• Which of the following factors does NOT influence solubility?
• What principle states that the number of atoms remains equal on both sides of a chemical equation?
• What is the structure of a methyl group?
• What is the main feature of covalent bonds?