Chemistry Chapter 2 H

Which state of matter takes both the shape and volume of its container? A. Solid B. Liquid C. Gas D. Both B and C

C. Gas

When an egg is boiled, what type of change is likely taking place?

chemical change

stays the same

When an iron nail is ground into powder, its mass ______.

What happens to matter during a chemical reaction? A) Matter is neither destroyed or created. B) Some matter is destroyed. C) Some matter is created. D) Some matter is destroyed and some is created.

A) Matter is neither destroyed or created.

Which of the following indicates that a chemical change has happened during cooking? A) The food darkens. B) Bubbles form in boiling water. C) Butter melts. D) Energy is transferred from the stove to a pan.

A) The food darkens.

Which of the following does NOT indicate that a chemical change may have taken place? A) fracture formation B) gas production C) precipitate formation D) energy transfer

A) fracture formation

What must occur for a change to be a chemical reaction? A. There must be a change in chemical properties B. There must be a change in physical properties C. The change must involve a change in mass D. The change must involve a change in volume

A. There must be a change in chemical properties

Which of the following is true about homogeneous mixtures? A. They are known as solutions B. They consist of two or more phases C. They have compositions that never vary D. They are always liquids

A. They are known as solutions

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place? A) a physical change B) a chemical change C) neither a physical change nor a chemical change D) both a physical change and a chemical change

B) a chemical change

What is one difference between a mixture and a compound? A. A compound consists of more than one phase B. A compound can only be separated into its components by chemical means C. A mixture can only be separated into its components by chemical means D. A mixture must be uniform in composition

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

The first figure in a properly written chemical symbol always is ____. A. Boldfaced B. Capitalized C. Italicized D. Underlined

B. Capitalized

Which state of matter has a definite volume and takes the shape of its container? A. Solid B. Liquid C. Gas D. Both B and C

B. Liquid

Which state of matter is characterized by having an indefinite shape, but a definite volume? A. Gas B. Liquid C. Solid D. None of the above

B. Liquid

What must be done to be certain that a chemical change has taken place? A) Check for the production of bubbles before and after the change. B) Demonstrate that a release of energy occurred after the change. C) Check the composition of the sample before and after the change. D) Demonstrate that energy was absorbed by the reactants after the change

C) Check the composition of the sample before and after the change.

Which action changes the identity of the substance referenced? A) melting gold B) running an electric current through copper C) corroding iron D) breaking an ice cube

C) corroding iron

Which of the following processes does NOT involve a change in chemical properties? A. Rusting B. Fermenting C. Boiling D. Burning

C. Boiling

A chemical change occurs when a piece of wood _____. A. Is split B. is painted C. Decays D. is cut

C. Decays

Which of the following is NOT a physical change? A. Grating cheese B. Melting cheese C. Fermenting cheese D. Mixing two cheeses in bowl

C. Fermenting cheese

Which of the following is a chemical property of water? A. It has a boiling point of 100 .C B. It is a colorless liquid C. It is composed of hydrogen and oxygen D. Sugar dissolves in it

C. It is composed of hydrogen and oxygen

An example of a homogeneous mixture is ____. A. Water B. Stainless steel C. Noodle soup D. Oxygen

C. Noodle soup

All of the following changes to a metal are physical changes EXPECT_____. A. Bending B. Melting C. Rusting D. Polishing

C. Rusting

Which state of matter is characterized by having a definite shape and a definite volume? A. Gas B. Liquid C. Solid D. All of the above

C. Solid

A golf ball has more mass than a tennis ball because it ____. a. takes up more space b. contains more matter c. contains different kinds of matter d. has a definite composition

Contains more matter

Which of the following is true for all chemical reactions? A) The total mass of the reactants increases. B) The total mass of the products is greater than the total mass of the reactants. C) The total mass of the products is less than the total mass of the reactants. D) The total mass of the reactants equals the total mass of the products.

D) The total mass of the reactants equals the total mass of the products.

Which of the following are considered physical properties of a substance? A. Color and Odor B. Melting and boiling points C. Malleability and hardness D. All of the above

D. All of the above

A substance that can be separated into two or more substances only by a chemical change is a(n) _________. A. Solution B. Element C. Mixture D. Compound

D. Compound

Which of the following does NOT involve a physical change? A. Mixing B. Melting C. Grinding D. Decomposing

D. Decomposing

Which of the following is a chemical property of water at 4.C? A) its color B) its state C) its temperature D) its ability to decompose into hydrogen and oxygen

D. Its ability to decompose into hydrogen and oxygen

A substance that forms a vapor is generally in what physical state at room temperature? A. Solid B. Liquid C. Gas D. Liquid or Solid

D. Liquid or Solid

What distinguishes a substance from a mixture? A. Substances are compounds, and mixtures are not B. Mixtures are groupings of elements, and compounds are not C. Samples of the same substance can have different intensive properties D. Mixtures can be separated physically, while compounds cannot

D. Mixtures can be separated physically, while compounds cannot

Which substance has a chemical symbol that is derived from a Latin name? A. Calcium B. Hydrogen C. Oxygen D. Potassium

D. Potassium

a solid from a liquid in a heterogeneous mixture

Filtration is used to separate

They must be in the same group (column) of the periodic table.

For elements to have similar physical and chemical properties, what must be true about them?

176 grams

If 48 grams of carbon are burned in the presence of 128 grams of oxygen, the amount of carbon dioxide that forms will be

same number of electron in the outer orbital similar chemical property of reactivity

In each vertical column, or group, of the periodic table, the elements have

physical properties

Separating mixtures into their components depends on the differences in the components

pure air

Which of the following can be classified as a mixture? pure water pure air pure nitrogen pure gold

mayonnaise

Which of the following is a mixture? baking soda mayonnaise sucrose table salt

Which of the following materials is a substance? A. Air B. Gasoline C. Stainless steel D. Silver

d. Silver