|
Which of the following are considered physical properties of a substance |
melting and boiling points, malleability and hardness, color and odor (all of the above) |
|
Which of the following indicates that a chemical change has happened during cooking? |
the food darkens |
|
Which state of matter takes both the shape and volume of its container? |
gas |
|
When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place? |
a chemical change |
|
When an iron nail melts, its mass… |
stays the same |
|
Which of the following is a chemical property of water 4 degrees Celsius? |
its ability to decompose into hydrogen and oxygen |
|
Which state of matter expands when heated and is easy to compress? |
gas |
|
What happens to matter during a chemical reaction? |
matter is neither created nor destroyed |
|
Which of the following is NOT a physical property of water? |
It is composed of hydrogen and oxygen |
|
What distinguishes a substance from a mixture? |
Mixtures can be separated physically, while compounds cannot |
|
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 |
|
Which of the following is a physical changes |
evaporation |
|
Which of the following is true about homogeneous mixtures |
they are known as solutions |
|
Which of the following processes does NOT involve a change in chemical properties? |
boiling |
|
Which of the following is NOT an example of matter |
heat |
|
Which of the following is NOT a physical change |
fermenting of cheese |
|
Which of the following is a heterogeneous mixture? |
soil |
|
Which of the following is used for chemical symbols today |
letters |
|
Which of the following items is NOT a compound |
salad dressing |
|
All of the following are physical properties of matter EXCEPT |
ability to rust |
|
An example of a homogeneous mixture is |
stainless steal |
|
A chemical change occurs when a piece of wood |
decays |
|
All of the following are physical properties of a substance in the liquid state EXCEPT |
not easily compressed |
|
Which of the following is a homogeneous mixture |
alcohol in water |
|
What do chemical symbols and formulas represent, respectively? |
elements and compounds |
|
Which action changes the identity of the substance referenced? |
corroding iron |
|
A substance that can be separated into two or more substances only by a chemical change is a(n) |
compound |
|
All of the following changes to a metal are physical changes EXCEPT |
rusting |
|
Which of the following materials is a substance |
silver |
|
The first figure in a properly written chemical symbol always is |
capitalized |
|
Which of the following is true for all chemical reactions? |
the total mass of the reactants equals the total mass of the products |
|
the chemical symbol for sodium is |
Na |
|
In the chemical reaction in which sucrose is heated and 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 a homogeneous mixture? |
salt water |
|
Which of the following CANNOT be classified as a substance? |
air |
|
Which state of matter has a definite volume and takes the shape of its container? |
gas |
|
A golf ball has more mass than a tennis ball because it… |
contains more matter |
|
Which of the following CANNOT be considered a single phase? |
a heterogeneous mixture |
|
Which state of matter is characterized by having an indefinite shape, but a definite volume? |
liquid |
|
Separating a solid from a liquid by evaporating the liquid is called |
distillation |
|
Which substance has a chemical symbol that is derived from a Latin name? |
potassium |
|
Which of the following does NOT indicate that a chemical change may have taken place? |
fracture formation |
|
A substance that forms a vapor is generally in what physical state at room temperature? |
liquid or solid |
|
The chemical formula of a compound does NOT indicate the |
how elements are joined in the compound |
|
Which of the following does NOT involve a physical change? |
decomposing |
|
Which state of matter is characterized by having a definite shape and a definite volume |
solid |
|
A vapor is which state of matter |
gas |
|
Which of the following is true about compounds? |
they are substances |
|
An example of an extensive property of matter is |
mass |
|
Which of the following is a chemical property? |
ability to react with oxygen |
|
Which of the following represents a compound? |
H2O |
|
What is one difference between a mixture and a compound? |
A compound can only be separated into its components by chemical means |
|
vapor |
gaseous state of substance that is a liquid or solid at room temperature |
|
heterogeneous mixture |
not uniform in composition |
|
product |
a substance formed in a chemical reaction |
|
reactant |
starting substance in a chemical reaction |
|
phase |
part of a sample having uniform composition and properties |
|
mixture |
a physical blend of two or more components |
|
distillation |
a process in which a liquid is boiled to produce a vapor that is condensed again into a liquid |
|
chemical reaction |
process in which substances are changed into different substances |
|
element |
substance that cannot be changed into simpler substances by chemical means |
|
homogeneous |
describes mixture with a uniform composition |
|
compound |
composed of two or more substances chemically combined in a fixed proportion |
|
mass |
amount of matter an object contains |
Share This
Flashcard
