Chemistry Chapter 3

Chemistry Chapter 3

Question 1 - 10 • The three common states of matter are _____, ______, and ___.

Answer 1 – 10 • Solid, Liquid, and Gas

Question 1 - 20 • Which of the following is a pure substance? • Soda • Sugar Water • Gun Powder • Steam

Answer 1 – 20 • Steam

Question 1 - 30 • A vapor is in the ______ state at room temperature.

Answer 1 – 30 • liquid

Question 1 - 40 • Physical properties can be observed without altering a substance’s _________.

Answer 1 – 40 • Composition

Question 1 - 50 • Intensive properties are independent of how much of a substance is present. An example of an intensive property is mass. • Is the above statement true or false?

Answer 1 – 50 • False • Mass is an extensive property because it varies based on the amount of the substance present

Question 2 - 10 • A change from one state to another is called a _____ ______.

Answer 2 – 10 • Phase Change

Question 2 - 20 • What law states that matter can neither be created nor destroyed during a chemical reaction?

Answer 2 – 20 • Law of Conservation of Mass

Question 2 - 30 • In the following reaction, H and O are classified as ______. 2H + O → H2O

Answer 2 – 30 • Reactants

Question 2 - 40 • In the following reaction, H2O is classified as the ______. 2H + O → H2O

Answer 2 – 40 • Product

Question 2 - 50 • A chemical change involves a change in a substances ___________.

Answer 2 – 50 • Composition

Question 3 - 10 • A _______ is a combination of two or more pure substances.

Answer 3 – 10 • Mixture

Question 3 - 20 • A smoothly blended mixture is called a ___________ mixture.

Answer 3 – 20 • Homogeneous

Question 3 - 30 • What is another word for a homogeneous mixture?

Answer 3 – 30 • Solution

Question 3 - 40 • ____________ is a physical separation technique that is based on differences in boiling points of the substances involved.

Answer 3 – 40 • Distillation

Question 3 - 50 • ______________ is a technique that separates the components of a mixture dissolved in either a gas or a liquid based on the ability of each component to travel or to be drawn across the surface of a fixed substrate.

Answer 3 – 50 • Chromatography

Question 4 - 10 • A(n) _______ is a pure substance that cannot be separated into simpler substances by physical or chemical means.

Answer 4 – 10 • Element

Question 4 - 20 • Another word for the columns on the Periodic Table of Elements is ______.

Answer 4 – 20 • Groups

Question 4 - 30 • The ___ __ ______ ________ states that a compound is always composed of the same elements in the same proportion by mass no matter how large or small the sample.

Answer 4 – 30 • Law of definite proportions

Question 4 - 40 • ____________ is a method that can be used to separate water (H2O) into it’s components H and O.

Answer 4 – 40 • Electrolysis

Question 4 - 50 • The ___ __ ________ __________ states that when different compounds are formed by a combination of the same elements, different masses of one element combine with the same fixed mass of the other element in a ratio of small whole numbers.

Answer 4 – 50 • Law of Multiple Proportions

Question 5 - 10 • HYPOTHESIS: The more chlorofluorocarbons introduced into the stratosphere, the thinner the ozone layer will become. • Name the independent and dependent variables.

Answer 5 – 10 • IV- Amount of CFCs • DV- Thickness of Ozone Layer

Question 5 - 20 • Any unit that is based on an object or event in the physical world.

Answer 5 – 20 • Base Unit

Question 5 - 30 • What the mass of an object does as it descends closer to sea level.

Answer 5 – 30 • Remains constant

Question 5 - 40 • Density is the ratio of an objects ______ to it’s ______.

Answer 5 – 40 • Mass, Volume (respectively)

Chemistry Chapter 3