question

the study of the process that take place in organisms

answer

biochemisty

question

the study of all chemicals containing carbon

answer

organic chemistry

question

the study of chemicals that, in general, do not contain carbon

answer

inorganic chemistry

question

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

answer

vapor

question

a physical blend of two or more components

answer

mixture

question

part of a sample having uniform composition and properties

answer

phase

question

not uniform in composition

answer

heterogeneous mixture

question

a substance formed in a chemical reaction

answer

product

question

starting substance in a chemical reaction

answer

reactant

question

amount of matter an object contains

answer

mass

question

describes mixture with a uniform composition

answer

homogeneous

question

substance that cannot be changed into simpler substances by chemical means

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element

question

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

answer

compound

question

process in which substances are changed into different substances

answer

chemical reaction

question

which field of science studies the composition and structure of matter

answer

chemistry

question

the study of chemicals that, in general, do not contain carbon is traditionally called what type of chemistry

answer

inorganic

question

which of the following would a chemist be most likely to study a.) a leaf floating on water b.) a leaf changing color in autumn c.) a leaf being blown by the wind d.) a leaf being eaten by insects

answer

a leaf changing color in autumn

question

which of the following statements is false a.) knowledge of chemistry allows he public to make informed decisions b.) studying chemistry ensures that officials make correct choices in funding technology c.) knowledge of chemistry helps prepare people for careers in soil science. d.) chemistry explains many aspects of nature

answer

studying chemistry ensures that officials make correct choices in funding technology

question

which of the following is an example of a current research focus in chemistry a.) development of smoke detectors fro common use b.) using hook-and-loop tape in the clothing industry c.) applying gene therapy to treat certain diseases d.) studying coal combustion as an energy source

answer

applying gene therapy to treat certain diseases

question

which of the following was a major contribution to chemistry by Antoine Lavoisier a.) he showed that oxygen is required for material to burn b.) he demonstrated the presence of phlogiston in air c.) he encouraged scientists to form explanations based on philosophical arguments d.) he developed the science of alchemy

answer

he showed that oxygen is required for material to burn

question

one characteristic of a scientific theory is that

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it can never be proved

question

a theory is a

answer

well-tested explanation for a broad set of observations

question

the variable that is observed using an experiment is called what type of variable

answer

responding

question

collaboration and communication are important in science because

answer

they increase the likelihood of a successful outcome

question

the step that usually comes last in solving numeric problems is

answer

calculate

question

how do conceptual problems differ from numeric problems

answer

solutions to conceptual problems normally do not involve calculations

question

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

answer

contains more matter

question

all of the following are physical properties of matter EXCEPT a.) mass b.) color c.) melting point d.) ability to rust

answer

ability to rust

question

which of the following are considered physical properties of a substance a.) color and odor b.) melting and boiling points c.) malleability and hardness

answer

all of them

question

a vapor is what state of matter

answer

gas

question

what state of matter takes both the shape and volume of its container

answer

gas

question

which state of matter is characterized by having an indefinite shape, but a definite volume

answer

liquid

question

which state of matter expands when heated and is easy to compress

answer

gas

question

which of the following is a physical change a.) corrosion b.) explosion c.) evaporation d.) rotting of food

answer

evaporation

question

which of the following CANNOT be considered a single phase a.) a pure solid b.) a pure liquid c.) a homogeneous mixture d.) a heterogeneous mixture

answer

a heterogeneous mixture

question

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

answer

distillation

question

an example of a homogeneous mixture is

answer

stainless steel

question

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

answer

compound

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what distinguishes a substance from a mixture

answer

mixtures can be separated physically, while compounds cannot

question

which of the following is used for chemical symbols today a.) drawings b.) icons c.) letters d.) numbers

answer

letters

question

the chemical symbol for iron is

answer

Fe

question

which of the following represents a compound a.) H b.) H-3 c.) H2O d.) O-16

answer

H2O

question

the chemical formula of a compound does NOT indicate the

answer

how elements are joined in the compound

question

which substance has a chemical symbol that is derived from a Latin name a.) calcium b.) hydrogen c.) oxygen d.) potassium

answer

potassium

question

in the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water which of the following is a reactant a.) sucrose b.) carbon dioxide c.) water d.) heat

answer

sucrose

question

which of the following is NOT a physical change a.) grating cheese b.) melting cheese c.) fermenting of cheese d.) mixing two cheeses in a bowl

answer

fermenting of cheese

question

all of the following changes to a metal are physical changes EXCEPT a.) bending b.) melting c.) rusting d.) polishing

answer

rusting

question

which of the following does NOT involves physical change a.) mixing b.) melting c.) grinding d.) decomposing

answer

decomposing

question

which of the following processes does NOT involve a change in chemical properties a.) rusting b.) fermenting c.) boiling d.) burning

answer

boiling

question

a chemical change occurs when a piece of wood

answer

decays

question

which of the following is a chemical property of water at 4 degrees C a.) its color b.) its state c.) its temperature d.) its ability to decompose into hydrogen and oxygen

answer

its ability to decompose into hydrogen and oxygen

question

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

answer

corroding iron

question

when an iron nail is ground into powder, its mass

answer

stays the same

question

how many traditional areas of study can chemistry be divided into

answer

5

question

how many steps are involved in solving numeric problems

answer

3

question

what is the melting point of water in degrees Celsius

answer

0 degrees Celsius

question

in how many physical states does water commonly exist

answer

3

question

what is the boiling point of water in degrees Celsius

answer

100 degrees Celsius

question

approximately how many elements exist in nature

answer

90-92

question

how may grams of liquid water are produced when 60 grams of ice melt

answer

60 grams

chemistry chapter 1 and 2 – Flashcards

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