Formation Of New Substance Vocabulary Test
(22).webp "Formation Of New Substance Vocabulary Test - Quiz")
Questions and Answers
- 1.
The characteristics or qualities of a substance: physical and chemical.
- A.
Molecule
- B.
Compound
- C.
Property
- D.
Precipitate
Correct Answer
C. PropertyExplanation
The given correct answer is "Property." In the context of the characteristics or qualities of a substance, the term "property" refers to the various attributes or features that describe a substance. These properties can be classified into two main categories: physical properties and chemical properties. Physical properties include characteristics such as color, density, and melting point, while chemical properties describe the behavior of a substance during chemical reactions. Therefore, "property" is the most appropriate choice to describe the characteristics or qualities of a substance.Rate this question:
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- 2.
Those characteristics that can observed when a chemical reaction changes the identity of the substance, such as potential to rust, corrode, or combust.
- A.
Chemical Property
- B.
Physical Property
- C.
Property
- D.
Evidence of Chemical Reactions
Correct Answer
A. Chemical PropertyExplanation
Chemical properties are characteristics that can be observed when a chemical reaction changes the identity of a substance. These properties include the potential of a substance to rust, corrode, or combust. Unlike physical properties, which describe the appearance or state of a substance, chemical properties involve the transformation of the substance at a molecular level. Therefore, the given answer, "Chemical Property," correctly describes the characteristics observed when a chemical reaction changes the identity of a substance.Rate this question:
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- 3.
To cause a solid substance to be separated from a solution.
- A.
Chemical Reaction
- B.
Precipitate
- C.
Compound
- D.
Subscript
Correct Answer
B. PrecipitateExplanation
When a solid substance is separated from a solution, it is called precipitation. This process occurs when two or more substances react chemically, causing the formation of a new compound that is insoluble in the solvent. The insoluble compound then appears as a solid precipitate, which can be separated from the solution through filtration or other methods. Therefore, "Precipitate" is the correct answer as it directly relates to the process of separating a solid substance from a solution.Rate this question:
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- 4.
A combination of chemical symbols showing the atoms of which a substance is made and their proportions.
- A.
Subscript
- B.
Chemical Formula
- C.
Molecule
- D.
Chemical Property
Correct Answer
B. Chemical FormulaExplanation
A chemical formula is a combination of chemical symbols that represents the atoms present in a substance and their proportions. It provides information about the elements and their ratios in a compound. By using chemical symbols and subscripts, a chemical formula gives a concise representation of the composition of a substance. It is an essential tool in chemistry for identifying and describing different compounds.Rate this question:
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- 5.
A number written just below the line that shows how many atoms of an element are present in the formula.
- A.
Molecule
- B.
Compound
- C.
Subscript
- D.
Chemical Formula
Correct Answer
C. SubscriptExplanation
A subscript is a number written just below the line that shows how many atoms of an element are present in the formula. In chemical formulas, subscripts indicate the ratio of atoms in a molecule or compound. For example, in the chemical formula H2O, the subscript 2 indicates that there are two hydrogen atoms for every one oxygen atom. Therefore, the correct answer is subscript.Rate this question:
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- 6.
The smallest particle of a compound that can exist on its own and keep its properties.
- A.
Molecule
- B.
Atom
- C.
Element
- D.
Compound
Correct Answer
A. MoleculeExplanation
A molecule is the smallest particle of a compound that can exist on its own and keep its properties. It consists of two or more atoms chemically bonded together. This distinguishes it from an atom, which is the smallest unit of an element that retains its chemical properties. An element is a pure substance made up of only one type of atom. A compound, on the other hand, is a substance composed of two or more different elements chemically bonded together. Therefore, the correct answer is molecule.Rate this question:
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- 7.
Which of the following is NOT evidence of a chemical reaction?
- A.
Color change
- B.
Temperature change
- C.
Production of gas
- D.
Volume decreases
Correct Answer
D. Volume decreasesExplanation
A decrease in volume is not typically considered evidence of a chemical reaction. Chemical reactions often involve the rearrangement of atoms and molecules, resulting in the formation of new substances with different properties. Color change, temperature change, and production of gas are more commonly observed as evidence of a chemical reaction, indicating a change in the chemical composition or structure of the substances involved. However, a decrease in volume could be a result of physical processes such as compression or evaporation, rather than a chemical reaction.Rate this question:
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- 8.
Made from two or more elements that are chemically combined, is not separated by physical means into other substances, and has different properties than the original elements that formed it.
- A.
Subscript
- B.
Element
- C.
Chemical formula
- D.
Compound
Correct Answer
D. CompoundExplanation
A compound is made from two or more elements that are chemically combined. It cannot be separated by physical means into other substances and has different properties than the original elements that formed it. In other words, a compound is a substance that is formed when atoms of different elements chemically bond together, creating a new substance with its own unique properties.Rate this question:
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- 9.
Those characteristics that can be observed without changing the identity of the substance such as size, shape, density, hardness, color, and state of matter
- A.
Physical Property
- B.
Chemical Property
- C.
Chemical reaction
- D.
Physical Change
Correct Answer
A. pHysical PropertyExplanation
The given characteristics, such as size, shape, density, hardness, color, and state of matter, are all examples of physical properties. Physical properties can be observed without changing the identity of the substance. They describe the inherent qualities of a substance and can be measured or observed without any chemical reactions taking place.Rate this question:
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- 10.
A change without forming a new substance such as a different size or state of matter
- A.
Chemical Change
- B.
Physical Change
- C.
Chemical reaction
- D.
Physical reaction
Correct Answer
B. pHysical ChangeExplanation
A physical change refers to a change in the physical properties of a substance, such as its size, shape, or state of matter, without forming a new substance. In this case, the given explanation aligns with the definition of a physical change as it mentions that the change does not involve the formation of a new substance.Rate this question:
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- 11.
A change that alters the identity of a substance resulting in a new substance or substances with different properties
- A.
Chemical Change
- B.
Physical Change
- C.
Chemical reaction
- D.
Physical reaction
Correct Answer
A. Chemical ChangeExplanation
A chemical change refers to a process in which the identity of a substance is altered, resulting in the formation of new substances with different properties. This change typically involves a chemical reaction, where chemical bonds are broken and new bonds are formed. Unlike physical changes, which only affect the physical properties of a substance (such as shape, size, or state), a chemical change leads to the creation of entirely new substances.Rate this question:
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Jul 04, 2024Quiz Edited by
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Nov 01, 2011Quiz Created by
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