MATTER & CHANGE – Flashcards
Unlock all answers in this set
Unlock answersWHICH OF THE FOLLOWING IS NOT A PHYSICAL CHANGE?
A. DISSOLVING SUGAR IN WATER B. BURNING GASOLINE IN AN ENGINE C. EVAPORATING SEA WATER FOR SALT D. SLICING A PIECE OF BREAD |
| B. BURNING GASOLINE IN AN ENGINE |
WHICH OF THE FOLLOWING IS NOT A PROPERTY OF A GAS?
A. HAS A DEF. SHAPE B. HAS NO DEF. VOLUME C. ASSUMES SHAPE OF ITS CONTAINER D. EASILY COMPRESSIBLE |
| A. HAS A DEFINITE SHAPE |
WHICH OF THE FOLLOWING IS NOT A PHYSICAL PRPERTY OF SUCROSE?
A. SOLID AT ROOM TEMP B. DECOMPOSES WHEN HEATED C. DISSOLVES IN WATER D. TASTES SWEET |
| B. DECOMPOSES WHEN HEATED |
WHICH IS TYPICALLY IN A DIFF. PHYSICAL STATE THAN THE OTHERS AT ROOM TEMP?
A. SALT B. SUGAR C. FLOUR D. WATER |
| D. WATER |
PHYSICAL STATE: GAS
DEF SHAPE: DEF VOLUME: EASILY COMPRESSIBLE |
DEF SHAPE: NO DEF VOLUME: NO EASILY COMPRESSIBLE: YES |
PHYSICAL STATE: LIQUID
DEF SHAPE: DEF VOLUME: READILY COMPRESSIBLE: |
DEF SHAPE: NO DEF VOLUME: YES READILY COMPRESSIBLE: NO |
PHYSICAL STATE: SOLID
DEF SHAPE: DEF VOLUME: READILY COMPRESSIBLE: |
DEF SHAPE: YES DEF VOLUME: YES READILY COMPRESSIBLE: NO |
CHLORINE IS A COLORED GAS
TRUE OR FALSE |
| TRUE |
| ETHANOL AND BROMINE BOIL AT A LOWER TEMPERATURE THAN WHAT ? |
| WATER |
| HOW CAN YOU SEPARATE A MIXTURE OF SALT AND WATER ? |
DISTILLATION OR EVAPORATION |
| WHAT IS A MIXTURE OF ONE PHASE, AND WHEN ALL THE COMPONENTS ARE EVENLY DISTRIBUTED? |
| HOMOGENEOUS |
DETERMINE IF THE FOLLOWING ARE HOMO/HETERO GENEOUS:
A. GASOLINE B. CHUNKY PEANUT BUTTER C. OIL&VINEGAR SALAD DRESSING D. ORANGE SODA |
A. HOMOGENEOUS B. HETEROGENEOUS C. HETEROGENEOUS D. HOMOGENEOUS |
DETERMINE IF THESE ARE PURE SUBSTANCES OR MIXTURES:
A. ETHANOL B. VINEGAR C. MOTOR OIL D. HELIUM |
A. PURE S B. MIXTURE C. MIXTURE D. PURE S |
| ETHANOL IN WATER IS WHAT KIND OF SOLUTION? |
| LIQUID TO LIQUID |
| SUCROSE IN ETHANOL IS WHAT KIND OF SOLUTION? |
| SOLID TO LIQUID |
| CARBON IN IRON IS WHAT KIND OF SOLUTION? |
| GAS AND LIQUID |
| OXYGEN IN WATER IS WHAT KIND OF SOLUTION? |
| GAS AND LIQUID |
WHAT ELEMENTS MAKE UP CHLOROFORM
CHCl3 |
| Carbon. Hydrogen, and Chlorine |
Name the Elements to Symbols:
a. Pb b. K c. Au d. Fe |
a. lead b. potassium c. gold d. iron |
Name symbols to elements:
a. chlorine b. sodium c. silver d. carbon |
a. Cl b. NaCl c. Ag d. C |
which isn't an element: ; copper, sulfur, ammonia, or helium |
| ammonia |
which is a chemical change: ; a. gasoline boils b. lead added to gasoline c. gasoline burning d. gasoline poured into a tank |
| c. gasoline burning |
physical/chemical: ; a. dew dried by sun b. dark cloth faded by sunlight c. grape juice turned in to wine d. soap dissolved in water |
a. physical b. chemical c. chemical d. physical |
If 44 g of CO2 react completely with 18 g of H2O what is the mass of the carbonic acid formed ? ; |
| 62 g |
| in an engine, octane combines with O2 to form CO2 and H2O. If 22.8 g of octane combine completely with 80 g of;O2 to form 70.4 g of;CO2 what mass of water is formed? |
| 32.4 g |
a liquid is a form of matter that a. flows b. easily compressed c. has no def. volume d. has a def. shape |
| a. flows |
Examples of physical changes are: ; a. freezing/cutting b. cutting/grinding c. boiling/condensing d. all of the above |
d. all of the above: ; freezing/cutting cutting/grinding boiling/condensing |
which is not a physical property of water? ; a. noiling point of 100oC; b. colorless liquid c. able to dissolve table salt d. separates into H and O |
| d. separates into H and O |
which cant be classified as a substance? ; table salt, air, iron, or sulfur |
| air |
example of change of state is : ; a. boiling water to form a vapor b. opening a walnut c. preparing hardboiled egg d. all of the above |
| boiling water to form a vapor |
the mass of the reactants is always greater than the mass of products. ; true/false? |
| FALSE |
mass of products of always greater than mass of reactants ; true/false? |
| FALSE |
there is no relationship between mass of reactants and products ; true/false? |
| FALSE |
mass of products = mass of reactants ; true/false? |
| TRUE |
| in a chemical equation, the arrow means...? |
| "are changed into" |
| mixtures are a ____ of two or more substances |
| physical blend |
| the simplest forms of matter are the _____ |
| elements |
| the composition of heterogeneous and homogeneous mixtures may ______ |
| differ |
| the formula for potassium hydroxide (KOH) contains the elements ______, ______, _____. |
potassium oxygen hydrogen |
| matter that flows but has a definite volume |
| liquids |
| amount of matter that an object contains |
| mass |
| starting substances in a chemical reaction |
| reactants |
| homogeneous mixture |
| solution |
| simplest forms of matter |
| elements |
| part of a system with uniform composition and properties |
| phase |
| alters a substance without changing its chemcial composition |
| physical change |
| matter w/ a definite shape and volume |
| solid |
substances formed in chemical reaction ; |
| products |
| anything that takes up space and has mass |
| matter |
all are physical properties of a substance in the liquid state except ; definite volume able to flow not easily compressed definite shape |
| definite shape |
which doesn't fit
solid, gas, liquid, reactant |
| reactant |
| chemical symbol for sodium is..? |
| Na |
| a basketball has more mass then a golf ball because |
| the bball takes up more space |
a gas is a form of matter that
a. has a def. volume b. is generally a liquid/solid at room temp c. takes shape/volume and container d. difficult to compress |
| c. takes shape/volume of its container |
homogeneous mixtures:
a. can consist of liquids only b. consist of two or more phases c. have an unvarying composition d. are known as solutions |
| C and D |
a compund
a. is a pure substance b. has a variable composition c. can be physically separated into its elements d. has properties similar to those of its elements |
| D |
physicial properties of a substance unclude
a. color/solubility d. melting/boiling points c. change in mass occurs d. all of the above |
| d. all of above |
when iron and oxygen combine to form oxide
a. physicial change occurs b. change of state occurs c. change in mass occurs d. chemical change occurs |
| d. |
| during chemical/physical changes, substances absorb or give off _______. |
| heat or energy |
| during _____, a liquid is boiled to produce a vapor that is then condensed again to a liquid. |
| evaporation or distillation |
| mixtures differ from pure substances because mixtures have a ______ composition |
| variable |
| when iron and sulfur combine to form iron sulfide, a ______ change takes place |
| chemical |
| a _____ property is a quality of a substance that can be observed or measured without changing the composition of the substance. |
| physical |
| Elements combine chemically to form ______. |
| compunds |
| Fe is the chemical symbol for the element _______. |
| Iron |
| A ______ mixture has a completely uniform composition. |
| homogeneous |
| In any physical or chemical change, mass is _____. |
| conserved |
| In a chemical reaction, the new substances formed are called ______. |
| products |
