Isaz Chemistry A Block 3 Pre-test
-
A description of how close a measurement is to the true value of the quantity measured. (AZ HS Science S1:C2:PO3)
-
Accuracy
-
Liter
-
Kilogram
-
Energy
-
ISAZ Chemistry A block 3 pre-test
IMPORTANT to READ: This quiz is NOT connected to the K12 LMS grade book. Please wait 3 to 5 school days for Mrs. L. To enter your grade points into the grade book.
Please try to do your best! You will receive 10 pts for completing this quiz. See more
(14).webp "Isaz Chemistry A Block 3 Pre-test - Quiz")
Quiz Preview
- 2.
A possible explanation of an observation that can be tested by scientific investigations is a(an) ____________________________. (AZ HS Science S1:C2:PO2)
-
Inference
-
Explanation
-
Hypothesis
-
Science
Correct Answer
A. HypothesisExplanation
A hypothesis is a possible explanation for an observation that can be tested through scientific investigations. It is a proposed explanation or prediction based on existing knowledge or observations. By conducting experiments or gathering data, scientists can test the validity of a hypothesis and determine if it is supported or refuted. Hypotheses are an essential component of the scientific method and are used to guide research and further our understanding of the natural world.Rate this question:
-
- 3.
When matter moves from a gas to a liquid it is called _____________________. (AZ HS Science S5:C1:PO1)
-
Sublimation
-
Condensation
-
Deposition
-
Density
Correct Answer
A. CondensationExplanation
When matter moves from a gas to a liquid, it is called condensation. This process occurs when the gas molecules lose energy and come together to form liquid droplets. This can happen when the temperature of the gas decreases or when the pressure increases. Condensation is a common phenomenon that can be observed in everyday life, such as when water vapor in the air turns into dew on a cold surface or when steam from a hot shower condenses on a mirror.Rate this question:
-
- 4.
A change in a substance that involves a change in the identity of the substance is _________________. (AZ HS Science S1:C5:PO2)
-
Chemical Change
-
Phase Change
-
Physical Property
-
Physical Change
Correct Answer
A. Chemical ChangeExplanation
A change in a substance that involves a change in the identity of the substance is referred to as a chemical change. In a chemical change, the atoms rearrange themselves to form new substances with different properties. This is different from a physical change, where the substance may change its form or state but its identity remains the same. Examples of chemical changes include combustion, oxidation, and decomposition reactions.Rate this question:
-
- 5.
Which of the following is not a fundamental particle in an atom? (AZ HS Science S5:C1:PO6)
-
Electron
-
Element
-
Neutron
-
Proton
Correct Answer
A. ElementExplanation
An element is not a fundamental particle in an atom. An element is a substance that is made up of only one type of atom. Atoms are composed of three fundamental particles: electrons, protons, and neutrons. Electrons have a negative charge and orbit around the nucleus of an atom. Protons have a positive charge and are found in the nucleus. Neutrons have no charge and are also found in the nucleus. Therefore, the correct answer is element, as it is not a fundamental particle but rather a substance composed of atoms.Rate this question:
-
- 6.
What is the negatively—charged particle in an atom? (AZ HS Science S5:C1:PO6)
-
Proton
-
Positron
-
Electron
-
Neutron
Correct Answer
A. ElectronExplanation
The negatively-charged particle in an atom is the electron. Electrons are located outside the nucleus and have a negative charge. They are much smaller and lighter than protons and neutrons, and they are responsible for the majority of chemical reactions and electrical conductivity in materials.Rate this question:
-
- 7.
An atom of an element contains eight electrons. What is the identity of this element? (AZ HS Science S5:C1:PO3)
-
Flourine
-
Carbon
-
Oxygen
-
Nitrogen
Correct Answer
A. OxygenExplanation
An atom of oxygen contains eight electrons, which matches the information given in the question. Therefore, the correct answer is oxygen.Rate this question:
-
- 8.
What is a chemical compound? (AZ HS Science S5:C1:PO4)
-
A subatomic particle
-
A combination of two protons and two electrons
-
A combination of two or more chemical elements
-
A mixture of two or more substances
Correct Answer
A. A combination of two or more chemical elementsExplanation
A chemical compound is formed when two or more chemical elements combine together. It is not a subatomic particle or a combination of protons and electrons. It is also different from a mixture, which is a combination of two or more substances. Therefore, the correct answer is that a chemical compound is a combination of two or more chemical elements.Rate this question:
-
- 9.
(True or False) An ionic bond forms when one or more pairs of electrons are shared between two atoms. (AZ HS Science S5:C1:PO4)
-
True
-
False
Correct Answer
A. FalseExplanation
An ionic bond forms when one or more pairs of electrons are transferred from one atom to another, not shared. This results in the formation of positively charged ions (cations) and negatively charged ions (anions), which are then attracted to each other due to their opposite charges, forming an ionic bond. Therefore, the statement that an ionic bond forms when one or more pairs of electrons are shared between two atoms is incorrect.Rate this question:
-
- 10.
Sodium is a/an: (AZ HS Science S5:C1:PO4)
-
Element
-
Compound
-
Homogeneous mixture
-
Heterogeneous mixture
Correct Answer
A. ElementExplanation
Sodium is a correct answer because it is a chemical element. Elements are substances that cannot be broken down into simpler substances by chemical means. Sodium is a highly reactive metal that belongs to the alkali metal group and has the atomic number 11. It is commonly found in compounds such as sodium chloride (table salt) but in its pure form, it exists as an element.Rate this question:
-
Quiz Review Timeline (Updated): May 23, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
May 23, 2023Quiz Edited by
ProProfs Editorial Team -
Dec 22, 2014Quiz Created by
Shaun_horton
Back to top