MATTER & CHANGE – Flashcards

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question

WHICH 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

answer
B. BURNING GASOLINE IN AN ENGINE
question

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

answer
A. HAS A DEFINITE SHAPE
question

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

answer
B. DECOMPOSES WHEN HEATED
question

WHICH IS TYPICALLY IN A DIFF. PHYSICAL STATE THAN THE OTHERS AT ROOM TEMP?

 

A. SALT

B. SUGAR

C. FLOUR

D. WATER

answer
D. WATER
question

PHYSICAL STATE: GAS

 

DEF SHAPE:

DEF VOLUME:

EASILY COMPRESSIBLE

answer

DEF SHAPE: NO

DEF VOLUME: NO

EASILY COMPRESSIBLE: YES

question

PHYSICAL STATE: LIQUID

 

DEF SHAPE:

DEF VOLUME:

READILY COMPRESSIBLE:

answer

DEF SHAPE: NO

DEF VOLUME: YES

READILY COMPRESSIBLE: NO

question

PHYSICAL STATE: SOLID

 

DEF SHAPE: 

DEF VOLUME: 

READILY COMPRESSIBLE: 

answer

DEF SHAPE: YES

DEF VOLUME: YES

READILY COMPRESSIBLE: NO

question

CHLORINE IS A COLORED GAS

 

TRUE OR FALSE

answer
TRUE
question
ETHANOL AND BROMINE BOIL AT A LOWER TEMPERATURE THAN WHAT ?
answer
WATER
question
HOW CAN YOU SEPARATE A MIXTURE OF SALT AND WATER ?
answer

DISTILLATION

OR

EVAPORATION

question
WHAT IS A MIXTURE OF ONE PHASE, AND WHEN ALL THE COMPONENTS ARE EVENLY DISTRIBUTED?
answer
HOMOGENEOUS
question

DETERMINE IF THE FOLLOWING ARE HOMO/HETERO GENEOUS:

 

A. GASOLINE

B. CHUNKY PEANUT BUTTER

C. OIL&VINEGAR SALAD DRESSING

D. ORANGE SODA

answer

A. HOMOGENEOUS

B. HETEROGENEOUS

C. HETEROGENEOUS

D. HOMOGENEOUS

question

DETERMINE IF THESE ARE PURE SUBSTANCES OR MIXTURES:

 

A. ETHANOL

B. VINEGAR

C. MOTOR OIL

D. HELIUM

answer

A. PURE S

B. MIXTURE

C. MIXTURE

D. PURE S

question
ETHANOL IN WATER IS WHAT KIND OF SOLUTION?
answer
LIQUID TO LIQUID
question
SUCROSE IN ETHANOL IS WHAT KIND OF SOLUTION?
answer
SOLID TO LIQUID
question
CARBON IN IRON IS WHAT KIND OF SOLUTION?
answer
GAS AND LIQUID
question
OXYGEN IN WATER IS WHAT KIND OF SOLUTION?
answer
GAS AND LIQUID
question

WHAT ELEMENTS MAKE UP CHLOROFORM

 

CHCl3

answer
Carbon. Hydrogen, and Chlorine
question

Name the Elements to Symbols:

 

a. Pb

b. K

c. Au

d. Fe

answer

a. lead

b. potassium

c. gold

d. iron

question

Name symbols to elements:

 

a. chlorine

b. sodium

c. silver

d. carbon

answer

a. Cl

b. NaCl

c. Ag

d. C

question

which isn't an element:

;

copper, sulfur, ammonia, or helium

answer
ammonia
question

which is a chemical change:

;

a. gasoline boils

b. lead added to gasoline

c. gasoline burning

d. gasoline poured into a tank

answer
c. gasoline burning
question

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

answer

a. physical

b. chemical

c. chemical

d. physical

question

If 44 g of CO2 react completely with 18 g of H2O what is the mass of the carbonic acid formed ?

;

answer
62 g
question
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?
answer
32.4 g
question

a liquid is a form of matter that

a. flows

b. easily compressed

c. has no def. volume

d. has a def. shape

answer
a. flows
question

Examples of physical changes are:

;

a. freezing/cutting

b. cutting/grinding

c. boiling/condensing

d. all of the above

answer

d. all of the above:

;

freezing/cutting

cutting/grinding

boiling/condensing

question

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

answer
d. separates into H and O
question

which cant be classified as a substance?

;

table salt, air, iron, or sulfur

answer
air
question

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

answer
boiling water to form a vapor
question

the mass of the reactants is always greater than the mass of products.

;

true/false?

answer
FALSE
question

mass of products of always greater than mass of reactants

;

true/false?

answer
FALSE
question

there is no relationship between mass of reactants and products

;

true/false?

answer
FALSE
question

mass of products = mass of reactants

;

true/false?

answer
TRUE
question
in a chemical equation, the arrow means...?
answer
"are changed into"
question
mixtures are a ____ of two or more substances
answer
physical blend
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the simplest forms of matter are the _____
answer
elements
question
the composition of heterogeneous and homogeneous mixtures may ______
answer
differ
question
the formula for potassium hydroxide (KOH) contains the elements ______, ______, _____.
answer

potassium

oxygen

hydrogen

question
matter that flows but has a definite volume
answer
liquids
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amount of matter that an object contains
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mass
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starting substances in a chemical reaction
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reactants
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homogeneous mixture
answer
solution
question
simplest forms of matter
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elements
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part of a system with uniform composition and properties
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phase
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alters a substance without changing its chemcial composition
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physical change
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matter w/ a definite shape and volume
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solid
question

substances formed in chemical reaction

;

answer
products
question
anything that takes up space and has mass
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matter
question

all are physical properties of a substance in the liquid state except

;

definite volume

able to flow

not easily compressed

definite shape

answer
definite shape
question

which doesn't fit

 

solid, gas, liquid, reactant

answer
reactant
question
chemical symbol for sodium is..?
answer
Na
question
a basketball has more mass then a golf ball because
answer
the bball takes up more space
question

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

answer
c. takes shape/volume of its container
question

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

answer
C and D
question

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

answer
D
question

physicial properties of a substance unclude

 

a. color/solubility

d. melting/boiling points

c. change in mass occurs

d. all of the above

answer
d. all of above
question

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

answer
d. 
question
during chemical/physical changes, substances absorb or give off _______.
answer
heat or energy
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during _____, a liquid is boiled to produce a vapor that is then condensed again to a liquid.
answer
evaporation or distillation
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mixtures differ from pure substances because mixtures have a ______ composition
answer
variable
question
when iron and sulfur combine to form iron sulfide, a ______ change takes place
answer
chemical
question
a _____ property is a quality of a substance that can be observed or measured without changing the composition of the substance. 
answer
physical
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Elements combine chemically to form ______.
answer
compunds
question
Fe is the chemical symbol for the element _______.
answer
Iron
question
A ______ mixture has a completely uniform composition.
answer
homogeneous
question
In any physical or chemical change, mass is _____.
answer
conserved
question
In a chemical reaction, the new substances formed are called ______.
answer
products
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