FREE CHEMISTRY AND STUDY GAMES ABOUT CHEM

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FREE CHEMISTRY AND STUDY GAMES ABOUT CHEM

2.1-2.2 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -25 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: atom

Answer:

the smallest unit of an element that maintains the chemical properties of that element

Question 2: product

Answer:

substance that forms in a chemical reaction

Question 3: liquid

Answer:

the state of matter that has a definite volume but not a definition

Question 4: homogenous

Answer:

describes something that has a uniform structure or composition throughout

Question 5: heterogenous

Answer:

composed of dissimilar components

Question 6: mass

Answer:

measure of the amount of matter in an object

Question 7: change of state

Answer:

the change of a substance from one physical state to another

Question 8: compound

Answer:

a substance made up of atoms of two or more different elements joined by chemical bonds

Question 9: chemistry

Answer:

the scientific study of the composition, structure, and properties of matter and the changes that matter undergoes

Question 10: element

Answer:

a substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number

Question 11: matter

Answer:

anything that has mass and takes up space

Question 12: extensive property

Answer:

property that depends on the extent or size of a system

Question 13: chemical change

Answer:

a change that occurs when one or more substances change into entirely new substances with different properties

Question 14: solid

Answer:

the state of matter in which the volume and shape of a substance are fixed

Question 15: solution

Answer:

homogeneous mixture of two or more substances uniformly dispersed throughout a single phase

Question 16: chemical reaction

Answer:

the process by which one or more substances change to produce one or more different substances

Question 17: physical property

Answer:

characteristic of a substance that does not involve a chemical change, such as density, color, or hardness

Question 18: chemical

Answer:

any substance that has a defined composition

Question 19: gas

Answer:

form of matter that does not have a definite volume or shape

Question 20: intensive property

Answer:

property that does not depend on the amount of matter present, such as pressure, temperature, or density

Question 21: mixture

Answer:

combination of two or more substances that are not chemically combined

Question 22: pure substances

Answer:

a sample of matter, either a single element or a single compound, that has definite chemical and physical properties

Question 23: reactants

Answer:

substance or molecule that participates in a chemical reaction

Question 24: chemical property

Answer:

property of matter that describes a substance's ability to participate in chemical reactions

Question 25: physical change

Answer:

change of matter from one form to another without a change in chemical properties