WorksheetsStandard
Total questions: 55
Worksheet time: 28mins
Which is the best way for the separating a heavy, insoluble solid from a liquid?
Distillation
Decanting
Sieving
Magnetic
The process substances break down into small pieces and spread evenly in water is______.
To evaporate
To condense
To freeze
To dissolve
Which is an example of a mixture?
Water
Air
Oxygen gas
CO2
Which method is used to separate salt from water?
Magnetic
Chromatography
Filtering
Evaporation
All of the following tools can be used to separate solid from liquid except for _________?
Evaporation
Decanting
Sieving
Filtering
Which one of the following would you use to separate iron filings from sand?
Hot plate
Condenser
Filter paper
Bar magnet
Which method will NOT increase the speed of dissolving salt in the water?
Stiring
Heating
Shaking
Using bigger salt particles
Which one is the correct formula for Ammonium Carbonate?
NH4CO3
(NH4)2CO3
NH3CO4
(NH3)2CO4
What is the correct name for Na2SO4?
Sodium Sulfate
Sodium Sulfite
Potassium Sulfate
Potassium Sulfite
A solution is said to be ___________ when more solute will dissolve in it.
Unsaturated
Suspended
Saturated
Diluted
Which one of the following techniques would best be used to separate alcohol and water?
Chromatography
Decanting
Filtration
Fractional distillation
How many grams of KNO3 will dissolve in a 100g of water at 50°C?
40
50
80
100
Which of these salts is the MOST soluble at 80ºC?
NaNO3
NH4Cl
KCl
KClO3
Which solute is LEAST soluble at 20 ºC?
NaNO3
NH4Cl
KCl
KClO3
Which ionic compound below is insoluble with water
Na2CO3
K2SO4
BaSO4
ZnI2
Which of the below salt is soluble with water?
PbI2
Ba(NO3)2
CaSO4
Cu(OH)2
Which below cation is soluble together with all anions?
Na+
Ag+
Cu2+
Al3+
Which below anion does Zn2+ combined to form an insoluble compound?
Cl-
CHCOO-
OH-
SO42-
What is the concentration (g/L) of the following solutions? 4g of KCl in 250ml of solution.
10
16
100
1000
How many grams of hydrochloric acid are present in 5.0 L of a 0.8 g/L solution?
1.6
4
40
400
To what volume should 8.0g of KCl be used to prepare a 0.25g/L of solution?
16L
20L
32L
64L
Solute has a mass of 75 grams, solvent has 50g. What is the mass of solution?
25g
50g
75g
125g
Is coffee an acid or a base?
Acid
Base
Neutral
None of above
Which is a characteristic of an acid?
Turn litmus paper red
Feels slippery
Tastes bitter
Found mostly in detergent
What color does phenolphthalein turn in the presence of a base?
No color
Blue
Pink
Red
If the acid ends in "-ous", the anion has to end in_______?
-ite
-ate
–ide
-ic
What is the name of HClO3?
Hydrochloric acid
Hypochlorous acid
Chloric acid
Chlorous acid
Blood is a very weak base. What might its pH value be?
6.5
7.8
4.2
12.2
Hydrocarbons are compounds that contain____________.
Carbon, only
Carbon and hydrogen, only
Carbon, hydrogen, and oxygen, only
Carbon, hydrogen, oxygen, and nitrogen, only
Which element is present in all organic compounds?
Nitrogen
Carbon
Oxygen
Sulfur
Which compound is a saturated hydrocarbon?
Butanol
Butene
Butane
Butyne
Which formula represents an unsaturated hydrocarbon?
C3H6
C₄H10
C₃H₈
C₅H₁₂
Which formula represents a hydrocarbon?
CH₃Cl
CH₃CH₃
CH₃NH₂
CH₃COOH
An alkane with molecular formula C5H12 is called
Butane
Pentane
Hexane
Heptane
What is the general formula of alkynes?
CnH2n+2
CnH2n
CnH2n-2
CnH2n
Nature of organic compounds is
Ionic
Amphoteric
Covalent
Metallic
What is the chemical name of this compound
Pentyne
Pentyle
Pentene
Pentane
Which compound is classified as a hydrocarbon?
C7H8N4O2
C6H21O6
C4H10
C4H8O
A carbon-carbon triple bond is found in a molecule of
Butane
Butene
Butanone
Butyne
what formula can represent the compound in figure 3:
C4H8O
C4H5O
C5H3O
C2H8O
Big pH value means stronger base.
True
False
The formula for hydrosulfuric acid is H2S.
True
False
Alkene is a hydrocarbon with no double bonds.
True
False
Fractional distillation is the process used to separate the fractions of crude oil.
True
False
Homologous series are groups which is largely responsible for a molecule’s chemical properties.
True
False
Alkyne are a series of hydrocarbons that contain at least one triple carbon-carbon bond.
TRUE
FALSE
A hydrocarbon contains only Hydrogen, Carbon and Oxygen.
TRUE
FALSE
Oil is immiscible in water.
TRUE
FALSE
Water and alcohol can be separated through chromatography.
TRUE
FALSE
Distillation is used to isolate a component of a mixture basing on its boiling points.
TRUE
FALSE
Decreasing the particle size of the solute could make dissolving process faster
TRUE
FALSE
Filtration method could separate liquid from liquid.
TRUE
FALSE
If there is a metal and non-metal in a compound, metal always comes first in compound naming.
TRUE
FALSE
Most ammonium compounds are insoluble in water.
TRUE
FALSE
All acids have lower pH values compare to bases.
TRUE
FALSE
