MATTER & CHANGE

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

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
x

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