Chemistry Chapter 2

67 terms by kelskels9 

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mixture

A physical blend of two or more componets

product

A substance formed a chemical reaction

phase

Part of a sample having uniform compositions and properties

reactant

Starting substance in a chemical reaction

heterogeneous mixture

Not uniform in composition

vapor

Gaseous state of substance that is a liquid or solid at room temperature

distillation

A process in which a liquid is boiled to produce a vapor that is condensed again into a liquid

mass

Amount of matter an object contains

chemical reaction

Process in which substances are changed into different substances

compound

Composed of two or more substances chemically combined in a fixed proportion

element

Substance that cannot be changed into simpler substances by chemical means

homogeneous

Describes mixture with a uniform composition

In the chemical reaction in which sucrose is heated ans decomposes to form carbon dioxide and water, which of the following is a reactant?

Sucrose

What must occur for a change to be a chemical reaction?

There must be a change in chemical properties

Which of the following is NOT a physical property of water?

It is a compound of hydrogen and oxygen

Which of the following are considered physical properties of a substance?

Color and odor, malleability and hardness, melting and boiling points

A vapor is which state in matter?

Gas

All of the following are physical properties of matter except

Ability to rust

The chemical symbol for iron is

Fe

Which of the following represents a compound

H2O

A substance that forms a vapor is generally in what physical state at room temperature

liquid or solid

Which state of matter has a definite volume and takes the shape of its container?

liquid

Which state of matter is characterized by having a definite shape and a definite volume?

Solid

Which of the following Cannot be classified as a substance?

Air

Which of the following is a heterogeneous mixture

salt water

Which of the following cannot be considered a sing phase

a heterogeneous mixture

Which of the following is NOT an example of matter?

heat

A golf ball has more mass than a tennis ball because it

Contains more matter

An example of an extensive property of matter is

Mass

Which of the following is true about homogeneous mixtures?

They are known as solutions

Which of the following is a heterogeneous mixture?

Oil and vinegar

Which of the following is a homogeneous mixture

Salt water

Separating a solid from a liquid by evaporating the liquid is called

distillation

An example of a homogeneous mixture is

stainless steel

Which of the following items is Not a compound

salad dressing

Which of the following items is true about compounds

They are substances

A substance that can be separated into two or more substances only by a chemical change is a

compound

Which of the following materials is a substance

Silver

What is one difference between a mixture and a compound

A compound can only be separated into its components by chemical means

What distinguishes a substance from a mixture?

Mixtures can be separated physically, while compounds cannot.

Which state of matter takes both the shape and volume of its container?

gas

Which state of matter is characterized to have an indefinite shape, but a definite volume?

liquid

The first figure in a property written chemical symbol always is

Capitalized

Which of the following is used for chemical symbols today?

Letters

The chemical formula of a compound does Not indicate

how elements are joined in the compound

What do chemical symbols and formulas represent, respectively?

Elements and compounds

Which state of matter expands when heated and is easy to compress?

gas

All of the following are physical properties of a substance in the liquid state except

indefinite volume

Which of the following is a physical change?

Evaporation

Which substance has a chemical symbol that is derived from a Latin name?

Potassium

Which of the following is a chemical property?

ability to react with oxygen

Which of the following is Not a physical change?

Melting cheese

All of the following changes to a metal are physical changes

Bending, melting, and polishing

Which of the following is does Not involve a change in a chemical properties

boiling

What must be done to be certain that a chemical change has taken place

Check the composition of the sample before and after the change

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place

a chemical change

Which of the following does not indicate that a chemical change may have taken place?

Fracture formation

Which action changes the identity of a substance referenced?

corroding iron

What happens to matter during a chemical reaction

Matter is neither destroyed nor created

A chemical change occurs when a piece of wood

decays

Which of the following is a chemical property of water at 4 degreesC

Its ability to decompose into hydrogen and oxygen

Which of the following is true for all chemical reactions

The total mass of the reactants equals the toal mass of the products

When an iron nail is ground into powder, its mass

stays the same

IN how many physical states does water commonly exist

3

What is the boiling point of water in degrees Celsius

100

What is the melting point of water in degrees Celsius

0

How many grams of liquid water are produced when 60 grams of ice melt

60 grams

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