Architecture

Any Substance With A Definite Composition ? What Are Substances With A Definite Composition

___________ is the study of the composition, structure, and properties of matter; the processes that matter undergoes, and the energy changes that accompany these processes.

You are watching: Any substance with a definite composition

AB
Chemistry
Chemistry is the study of the _________, __________, and _________ of matter; the processes that matter undergoes, and the __________ that accompany these processes. composition, structure, and properties, energy changes
A(n) _______ is any substance that has a definite composition. chemical (EVERYTHING except energy and empty space is a chemical)
A chemical is any substance that has a _______. definite composition
_____ research is carried out for the sake of increasing knowledge. Basic
______ research is generally carried out to solve a problem. Applied
______ ivolves products that were developed using scientific knowledge in order to improve our lives. Technology
H hydrogen
He helium
Li lithium
Be beryllium
B boron
C carbon
N nitrogen
O oxygen
F fluorine
Ne neon
Na sodium
Mg magnesium
Al aluminum
Si silicon
P Phosphorus
S sulfur
Cl chlorine
Ar argon
K potassium
Ca calcium
Cr chromium
Mn manganese
Fe iron
Co cobalt
Ni nickel
Cu copper
Zn Zinc
As arsenic
Br bromine
Kr krypton
Ti titanium
Ag silver
Cd cadmium
Sn tin
I iodine
Xe xenon
Cs cesium
Ba barium
Pt platinum
Au gold
Hg mercury
Pb lead
Rn radon
Ra radium
U uranium
Pu plutonium
______ are the builidng blocks of matter. Atoms
_____ are the smallest unit of an element that maintains the chemical identity of that element. Atoms
______ are pure substances that are made of one type of atom. Elements
All of the 115 or so known elements can be found on the _____. periodic table
_____ are made of two or more different elements bonded together. compounds
A _______ property is a characteristic that can be observed or measured without changing the identity of the substance. physical property
A _____ change is a change in a substance that does not involve a change in the identity of the substance. physical change
Metling a candle would be an example of a _____ change. physical change
Burning a candle would be an example of a _____ change. chemical change
What are the three common states of matter? Solid, liquid and gas (a fourth state, plasma, occurs when a material becomes so hot that it loses most of its electrons)
In what state would you find matter that makes up the core of the sun? plasma
Has definite volume and shape. solid
Has definite volume but not shape liquid (liquids will conform to the shape of the bottom portion and sides of their container but retain the volume their overall volume)
Has neither definite volume nor shape. gas (gases will spread out to conform to the shape of their container, increasing in volume as they do)
Give two examples of changes of state. Melting and boiling (freezing and condensing are two more examples)
Melting, boiling, freezing, and condensing are all examples of ______. changes of state (sublimation is another example in which a solid skips the liquid phase and goes straight to the gaseous phase. Deposition is the opposite of sublimation)
A ________ relates to a substances ability to undergo changes that transform it into different substances. chemical property
A car that is rusting is undergoing a ____ change. chemical
A _____ change happens when there is a chemical reaction that changes the original substances involved into different substances. chemical
The substances that are required for a chemical reaction to occur (ie- the raw materials) are called the ____ of the reaction. reactants
The substances that are produced as a result of a chemical reaction are called the _____ of the reaction. products
What is the relationship between the mass of the products of a chemical reaction and the mass of the reactants of a chemical reaction? They are the same (matter is not created or destroyed, just rearranged)
In the chemical reaction or CARBON + OXYGEN —> CARBON DIOXIDE, the carbon dioxide is the ____ of the reactions. product
In the chemical reaction or CARBON + OXYGEN —> CARBON DIOXIDE, the oxygen and carbon on the left side of the reaction arrow are the ____ of the reactions. reactants
A pure substance can be a(n) _______ or a(n) ______.

See more: How Many Grains Are In A Pound Of Gunpowder, How Many Grains In 1 Lb Of Black Powder

element or compound
_______ contain more than one substance, each of which retains its identity and properties. Mixtures
_____ can usually be separated fairly easily. Mixtures
A uniform mixture is known as a(n) ________ mixture. homogeneous mixture (the prefix "homo" means "same")
A mixture in which the composition is not uniform throughout is known as a(n) ______ mixture. heterogeneous mixture (the prefix "hetero" means "differen.")
A sugar or salt solution would be classified as a(n) _____ mixture. homogeneous mixture (the prefix "homo" means "same")
A bucket of dirt would be classified as a(n) _____ mixture. heterogeneous mixture (the prefix "hetero" means "different")
If a oure substance can be decomposed by ordinary chemical means it is a(n) ____. compound
If a oure substance cannot be decomposed by ordinary chemical means it is a(n) ____. element
A homogenous mixture is also called a(n) ____. solution
One method of separating heterogeneous mixtures (like blood) into layers based on the density of the components can be accomplished by using a machine called a ______ that spins the mixture at very high speeds, forcing the most dense particles to the bottom., centrifuge (To separate plasma from the red and white blood cells, blood is put in a centrifuge tube and spun around very quickly, sending the heavier red blood cells to the bottom. The liquid component of blood, called plasma, forms a layer on top),
A method of separating mixtures based on the fact that different substances in the mixture have different boiling points is called ______. distillation (the apparatus below is used to distill liquids),
A method for separating substances in a mixture based on the facts that larger molecules move slower than smaller molecules through paper when dissolved in a solvent is called _____., chromatography (In the picture below, different molecules that make up a type of ink are separated. The far left jar shows the beginning and the far right jar shows the end of the separation),
A method of filtration in which molecules stick (adhere) to some surface (such as activated charcoal) while other molecules pass by is called _____., adsorption (the process of sticking is called adhesion),
A method for separating mixtures based on a barrier that allows small particles to pass through but not larger ones is called ____., filtration (Coffee filters work this way. Sometimes swimming pools filter the water through sand or diatomaceous earth),
The vertical columns of the periodic table are called _____ or ______. groups or families
Each group or family in the periodic table contains elements with similar _____. chemical properties
The horizontal rows of elements in the periodic table are called _______. periods
Physical and chemical properties change somewhat regularly within the same ______. period
A metal is an element that is a good conductor of __________ and _____ electricity and heat
Most metals are _______ at room temperature solid
Metals are _______, which means they can be _________ or rolled into thin sheets. malleable, hammered
Metals are _______, which means they can be drawn into a fine wire. ductile
A nonmetal is an element that is a ____ conductor of heat and electricity. poor
Most ______ are gases at room temperature. non-metals
Non-metals that are solid are ____ and lack ____. brittle, lack luster
A metalloid is an element that has __________. some characteristics of metals and some characteristics of non-metals.
All ____ are solid at room temperature. metalloids
Metalloids are ______ of electricity. semiconductors
A metal that is liquid at room temperature is ______. mercury (Hg)
The elements in the far right-hand column of the periodic table are called _____. noble gases
______ are generally unreactive.

See more: Study Of F I Am Legend Movie Worksheet Answers, I Am Legend Flashcards

noble gases
All _____ are gases at room temperature. noble gases
Name this piece of lab equipment., Beaker (used to hold liquids and estimate, not measure precisely, their volumes),
Name this piece of lab equipment., Beaker tongs,
Name this piece of lab equipment., Bunsen burner,
Name this piece of lab equipment., Buret clamp,
Name this piece of lab equipment., Buret,
Name this piece of lab equipment., Chemical Splash Goggles,
Name this piece of lab equipment., Clamp,
Name this piece of lab equipment., Clay triangle,
Name this piece of lab equipment.,

*
Condenser (This piece of equipment is used to cool down gases in distillations. Cold water is pumped past the narrown tube that the gas goes down as shown in the figure below),
Name this piece of lab equipment., Crucible and cover,
Name this piece of lab equipment., Erlenmeyer flask,
Name this piece of lab equipment., Evaporating dish,
Name the cylinder with the marking shown in each diagram, Eudiometer (It is used to collect gases given off during chemical reactions),
Name this piece of lab equipment., Filter flask,
Name this piece of lab equipment., Flask tongs,
Name this piece of lab equipment., Florence flask (The florence flask has a rounded body like the volumetric and round-bottom flasks. Florence flasks can have a rounded bottom or flat bottom as shown in the picture. Unlike the volumetric flask, it doesn't have the line marking a specific volume in the neck of the flask. The neck of a florence flask is longer and more narrow than a round-bottom flask. Both the florence and round-bottom flasks are often used in heating a solution with a bunsen burner),
Name this piece of lab equipment., Forceps,
Name this piece of lab equipment., Funnel,
Name this piece of lab equipment., Glass plate,
Name this piece of lab equipment., Glass stirring rod,
Name this piece of lab equipment., Graduated cylinder (Used to measure volumes of liquid. DO NOT use beakers for this purpose because the volume lines on beakers are only estimates),
Name this piece of lab equipment., Iron ring (a type of attachment for a ring stand),
Name this piece of lab equipment., Lab apron,
Name this piece of lab equipment., Latex glove,
Name this piece of lab equipment., Micro-spatula,
Name this piece of lab equipment.,

*
mortar and pestle,

*
Name this piece of lab equipment., Petri dishes,
Name this piece of lab equipment., Pipets,
Name this piece of lab equipment., Ring stand,
Name this piece of lab equipment., Round-bottom flask (The neck of a round-bottom flask is shorter and fatter than a florence flask),
Name this piece of lab equipment., Rubber stoppers,
Name this piece of lab equipment., Scoopula,
Name this piece of lab equipment., Test-tube brush,
Name this piece of lab equipment., Test-tube holder,
Name this piece of lab equipment., Test-tube rack,
Name this piece of lab equipment., Test-tubes,
Name this piece of lab equipment., Thermometer (Always put them back in the plastic sleeve when finished),
Name this piece of lab equipment., Volumetric flask (Notice the line on the neck that marks a specific volume),
Name this piece of lab equipment., Watch glass,
Name this piece of lab equipment., Well plate,
Name this piece of lab equipment., Wire mesh,

*

Related Articles

Leave a Reply

Your email address will not be published.

Back to top button