Fundamentals of Chemistry - Review Questions
Class 09 Chemistry - Chapter 1 - Fundamentals of Chemistry - Review Questions. Easy notes containing exercise and important questions of the chapter.
Fundamentals of Chemistry - Notes
Class 09 Chemistry - Chapter 1 - Fundamentals of Chemistry - Notes. Easy notes containing exercise and important questions of the chapter.
Organic Chemistry - Set 3
Premium ContentNUST Entrance Test - Organic Chemistry - Set 3
A method used to prevent rusting in ships and underground pipelines involves connecting the iron to a block of a more active metal such as magnesium. This method is called cathodic protection. How many moles of magnesium are present in 1 billion (1 x 109) atoms of magnesium?
Chemistry - Fundamentals of Chemistry - A method used to prevent rusting in ships and underground pipelines involves connecting the iron to a block of a more active metal such as magnesium. This method is called cathodic protection. How many moles of magnesium are present in 1 billion (1 x 109) atoms of magnesium?
Aspirin is a compound that contains carbon, hydrogen, and oxygen. It is used as a painkiller. An aspirin tablet contains 25 x 1030 molecules. How many moles of this compound are present in the tablet?
Chemistry - Fundamentals of Chemistry - Aspirin is a compound that contains carbon, hydrogen, and oxygen. It is used as a painkiller. An aspirin tablet contains 25 x 1030 molecules. How many moles of this compound are present in the tablet?
Calculate number of moles in the given number of molecules.
Chemistry - Fundamentals of Chemistry - Calculate number of moles in the given number of molecules.
Calculate number of moles in the given number of atoms.
Chemistry - Fundamentals of Chemistry - Calculate number of moles in the given number of atoms.
Calculate number of molecules in given moles of a substance
Chemistry - Fundamentals of Chemistry - Calculate number of molecules in given moles of a substance
Calculate number of atoms in given moles of a substance:
Chemistry - Fundamentals of Chemistry - Calculate number of atoms in given moles of a substance:
Before the digestive systems is X-rayed, people are required to swallow a suspension of Barium Sulphate (BaSO4). Calculate mass of one mole of BaSO4
Chemistry - Fundamentals of Chemistry - Before the digestive systems is X-rayed, people are required to swallow a suspension of Barium Sulphate (BaSO4). Calculate mass of one mole of BaSO4
A spoon of table salt (NaCl) contains 12.5 grams. Calculate the number of moles it contains.
Chemistry - Fundamentals of Chemistry - A spoon of table salt (NaCl) contains 12.5 grams. Calculate the number of moles it contains.
The molecular formula of a compound used for bleaching hair is H2O2
Chemistry - Fundamentals of Chemistry - The molecular formula of a compound used for bleaching hair is H2O2
How many moles of each of the following substance are present:
Chemistry - Fundamentals of Chemistry - How many moles of each of the following substance are present:
When natural gas burns, CO2 is formed. If 0.25 moles of CO2 is formed, what mass of CO2 is produced?
Chemistry - Fundamentals of Chemistry - When natural gas burns, CO2 is formed. If 0.25 moles of CO2 is formed, what mass of CO2 is produced?
Calculate the mass of ozone if 9.05 moles of ozone are formed in a storm?
Chemistry - Fundamentals of Chemistry - Calculate the mass of ozone if 9.05 moles of ozone are formed in a storm?
Calculate the mass of one mole of
Chemistry - Fundamentals of Chemistry - Calculate the mass of one mole of
Calculate the molar masses of the following:
Chemistry - Fundamentals of Chemistry - Calculate the molar masses of the following:
Differentiate between the terms gram atomic mass, gram molecular mass, and gram formula mass?
Chemistry - Fundamentals of Chemistry - Differentiate between the terms gram atomic mass, gram molecular mass, and gram formula mass?
Define gram formula mass.
Chemistry - Fundamentals of Chemistry - Define gram formula mass.
Define gram molecular mass.
Chemistry - Fundamentals of Chemistry - Define gram molecular mass.
What is the mass of 6.02 x 1023 molecules of glucose? Is this mass of glucose molecules equal to molecular mass of glucose?
Chemistry - Fundamentals of Chemistry - What is the mass of 6.02 x 1023 molecules of glucose? Is this mass of glucose molecules equal to molecular mass of glucose?
What is the mass of one mole of water molecules? Is the mass of water molecules equal to molecular mass of water?
Chemistry - Fundamentals of Chemistry - What is the mass of one mole of water molecules? Is the mass of water molecules equal to molecular mass of water?
Is gram atomic mass of C-atoms 12 g?
Chemistry - Fundamentals of Chemistry - Is gram atomic mass of C-atoms 12 g?
Define gram atomic mass.
Chemistry - Fundamentals of Chemistry - Define gram atomic mass.
What is the mass of 6.02 x 1023 Sulphur atoms? Is this mass of Sulphur atoms equal to its atomic mass?
Chemistry - Fundamentals of Chemistry - What is the mass of 6.02 x 1023 Sulphur atoms? Is this mass of Sulphur atoms equal to its atomic mass?
How many atoms are there in 1 mole of Sulphur atoms?
Chemistry - Fundamentals of Chemistry - How many atoms are there in 1 mole of Sulphur atoms?
What are the molar masses of carbon and Sulphur?
Chemistry - Fundamentals of Chemistry - What are the molar masses of carbon and Sulphur?
Define molar mass.
Chemistry - Fundamentals of Chemistry - Define molar mass.
Does a mole of carbon atoms have a different mass than a mole of Sulphur atoms?
Chemistry - Fundamentals of Chemistry - Does a mole of carbon atoms have a different mass than a mole of Sulphur atoms?
How many atoms are there in 32.1 g of S-atoms?
Chemistry - Fundamentals of Chemistry - How many atoms are there in 32.1 g of S-atoms?
What is the mass of one mole C-atoms?
Chemistry - Fundamentals of Chemistry - What is the mass of one mole C-atoms?
What is the concept of mole? Explain it?
Chemistry - Fundamentals of Chemistry - What is the concept of mole? Explain it?
How is a mole related to Avogadro's number?
Chemistry - Fundamentals of Chemistry - How is a mole related to Avogadro's number?
Define Avogadro's number. How does it relate to the masses of chemical substances?
Chemistry - Fundamentals of Chemistry - Define Avogadro's number. How does it relate to the masses of chemical substances?
Identify the branches of Chemistry in the following cases.
Chemistry - Fundamentals of Chemistry - Identify the branches of Chemistry in the following cases.
Differentiate between monoatomic and polyatomic molecules?
Chemistry - Fundamentals of Chemistry - Differentiate between monoatomic and polyatomic molecules?
Which species has odd number of electrons?
Chemistry - Fundamentals of Chemistry - Which species has odd number of electrons?
Which species has even number of electrons?
Chemistry - Fundamentals of Chemistry - Which species has even number of electrons?
Differentiate between an ion and a free radical.
Chemistry - Fundamentals of Chemistry - Differentiate between an ion and a free radical.
Define free radical.
Chemistry - Fundamentals of Chemistry - Define free radical.
Define molecular ion.
Chemistry - Fundamentals of Chemistry - Define molecular ion.
Describe the formation of Na+ ion?
Chemistry - Fundamentals of Chemistry - Describe the formation of Na+ ion?
Differentiate between cations and anions.
Chemistry - Fundamentals of Chemistry - Differentiate between cations and anions.
Determine the formula mass of table salt and milk of magnesia.
Chemistry - Fundamentals of Chemistry - Determine the formula mass of table salt and milk of magnesia.
Define formula mass.
Chemistry - Fundamentals of Chemistry - Define formula mass.
Why the term molecular mass is used for molecular compounds whereas the term formula mass is used for ionic compounds?
Chemistry - Fundamentals of Chemistry - Why the term molecular mass is used for molecular compounds whereas the term formula mass is used for ionic compounds?
Why are all the ionic compounds represented by their empirical formulas?
Chemistry - Fundamentals of Chemistry - Why are all the ionic compounds represented by their empirical formulas?
The term molecular formula may not be used to represent every compound; rather certain compounds are represented by their formula units. Why?
Chemistry - Fundamentals of Chemistry - The term molecular formula may not be used to represent every compound; rather certain compounds are represented by their formula units. Why?
Determine the molecular mass of glucose and naphthalene.
Chemistry - Fundamentals of Chemistry - Determine the molecular mass of glucose and naphthalene.
Define molecular mass.
Chemistry - Fundamentals of Chemistry - Define molecular mass.
Caffeine (C8H10N4O2) is found in tea and coffee. Write the empirical formula for caffeine.
Chemistry - Fundamentals of Chemistry - Caffeine (C8H10N4O2) is found in tea and coffee. Write the empirical formula for caffeine.
Vinegar is 5% acetic acid. This contains 2 carbon atoms, four hydrogen atoms and 2 oxygen atoms. Write its empirical and molecular formulas.
Chemistry - Fundamentals of Chemistry - Vinegar is 5% acetic acid. This contains 2 carbon atoms, four hydrogen atoms and 2 oxygen atoms. Write its empirical and molecular formulas.
Aspirin is used as a mild pain killer. There are nine carbon atoms, eight hydrogen atoms and four oxygen atoms, in this compound. Write its empirical and molecular formulas.
Chemistry - Fundamentals of Chemistry - Aspirin is used as a mild pain killer. There are nine carbon atoms, eight hydrogen atoms and four oxygen atoms, in this compound. Write its empirical and molecular formulas.
For many compounds, empirical and molecular formulas are same.
Chemistry - Fundamentals of Chemistry - For many compounds, empirical and molecular formulas are same.
Write the empirical formulas for the compound containing carbon to hydrogen in the following ratios:
Chemistry - Fundamentals of Chemistry - Write the empirical formulas for the compound containing carbon to hydrogen in the following ratios:
Write a list of elements with their symbols and atomic masses.
Chemistry - Fundamentals of Chemistry - Write a list of elements with their symbols and atomic masses.
Molecular formulas for water and carbon dioxide are H2O and CO2 respectively. What are empirical formulas for these compounds?
Chemistry - Fundamentals of Chemistry - Molecular formulas for water and carbon dioxide are H2O and CO2 respectively. What are empirical formulas for these compounds?
Identify empirical and molecular formula for benzene from the following formulas.
Chemistry - Fundamentals of Chemistry - Identify empirical and molecular formula for benzene from the following formulas.
The actual ratio between C, Hand O atoms in a glucose molecule is 6:12:6. What is the molecular formula of glucose?
Chemistry - Fundamentals of Chemistry - The actual ratio between C, Hand O atoms in a glucose molecule is 6:12:6. What is the molecular formula of glucose?
The simplest ratio between C, H and O atoms in glucose in 1:2:1. What is the empirical formula of glucose?
Chemistry - Fundamentals of Chemistry - The simplest ratio between C, H and O atoms in glucose in 1:2:1. What is the empirical formula of glucose?
Differentiate between empirical formula and a molecular formula?
Chemistry - Fundamentals of Chemistry - Differentiate between empirical formula and a molecular formula?
Write down the relative atomic number of some elements.
Chemistry - Fundamentals of Chemistry - Write down the relative atomic number of some elements.
Define atomic mass unit (AMU).
Chemistry - Fundamentals of Chemistry - Define atomic mass unit (AMU).
Define relative atomic mass.
Chemistry - Fundamentals of Chemistry - Define relative atomic mass.
Write the two main advantages of garlic.
Chemistry - Fundamentals of Chemistry - Write the two main advantages of garlic.
Atomic number of an element is 17 and mass number is 35. How many protons and neutrons are in the nucleus of an atom of this element?
Chemistry - Fundamentals of Chemistry - Atomic number of an element is 17 and mass number is 35. How many protons and neutrons are in the nucleus of an atom of this element?
Define isotope?
Chemistry - Fundamentals of Chemistry - Define isotope?
Define mass number.
Chemistry - Fundamentals of Chemistry - Define mass number.
What is the mass number of C-atom?
Chemistry - Fundamentals of Chemistry - What is the mass number of C-atom?
What is the atomic number of He
Chemistry - Fundamentals of Chemistry - What is the atomic number of He?
Define atomic number
Chemistry - Fundamentals of Chemistry - Define atomic number.
Differentiate between compound and mixture
Chemistry - Fundamentals of Chemistry - Differentiate between compound and mixture?
Describe the different types of mixture
Chemistry - Fundamentals of Chemistry - Describe the different types of mixture?
Define mixture
Chemistry - Fundamentals of Chemistry - Define mixture.
Define compound
Chemistry - Fundamentals of Chemistry - Define compound.
Define element
Chemistry - Fundamentals of Chemistry - Define element
Define substance
Chemistry - Fundamentals of Chemistry - Define substance
Define matter
Chemistry - Fundamentals of Chemistry - Define matter
Explain the molecularity of the physical world
Chemistry - Fundamentals of Chemistry - Explain the molecularity of the physical world
alpha particle when bombarded on nitrogen atom a Proton is emitted. Identify the branch of chemistry in this case
Chemistry - Fundamentals of Chemistry - alpha particle when bombarded on nitrogen atom a Proton is emitted. Identify the branch of chemistry in this case
Chlorofluorocarbon compounds are responsible for the depletion of ozone layer. Identify the branch of chemistry in this case
Chemistry - Fundamentals of Chemistry - Chlorofluorocarbon compounds are responsible for the depletion of ozone layer. Identify the branch of chemistry in this case
An analyst determines NO2 is responsible for acid rain. Identify the branch of chemistry in this case
Chemistry - Fundamentals of Chemistry - An analyst determines NO2 is responsible for acid rain. Identify the branch of chemistry in this case
A chemist performed an experiment to check the percentage purity of a sample of glucose (C6H12O6). Identify the branch of chemistry in this case.
Chemistry - Fundamentals of Chemistry - A chemist performed an experiment to check the percentage purity of a sample of glucose (C6H12O6). Identify the branch of chemistry in this case.
Ammonia is a colorless gas with pungent irritating odor. It is highly soluble in water. Identify the branch of chemistry that tells us about such properties.
Chemistry - Fundamentals of Chemistry - Ammonia is a colorless gas with pungent irritating odor. It is highly soluble in water. Identify the branch of chemistry that tells us about such properties.
Habers process converts large quantities of hydrogen and nitrogen into ammonia (NH3). Identify the branch of chemistry in this case
Chemistry - Fundamentals of Chemistry - Habers process converts large quantities of hydrogen and nitrogen into ammonia (NH3). Identify the branch of chemistry in this case
Plantation helps in overcoming greenhouse effect. Identify the branch of chemistry in this case
Chemistry - Fundamentals of Chemistry - Plantation helps in overcoming greenhouse effect. Identify the branch of chemistry in this case
Photosynthesis produces glucose and oxygen from carbon dioxide and water in presence of chlorophyll and sunlight. Identify the branch of chemistry in this case
Chemistry - Fundamentals of Chemistry - Photosynthesis produces glucose and oxygen from carbon dioxide and water in presence of chlorophyll and sunlight. Identify the branch of chemistry in this case
What are the defects of Dalton’s atomic theory
Chemistry - Fundamentals of Chemistry - What are the defects of Dalton’s atomic theory
Give main postulates of Dalton’s atomic theory
Chemistry - Fundamentals of Chemistry - Give main postulates of Dalton’s atomic theory
Explain with the help of vinegar how we can differentiate between different branches of chemistry
Chemistry - Fundamentals of Chemistry - Explain with the help of vinegar how we can differentiate between different branches of chemistry
Explain how Archimedes checked the purity of gold crown
Chemistry - Fundamentals of Chemistry - Explain how Archimedes checked the purity of gold crown
What are the various branches of chemistry? Give brief description of each.
Chemistry - Fundamentals of Chemistry - What are the various branches of chemistry? Give brief description of each.
Define Chemistry
Chemistry - Fundamentals of Chemistry - Define Chemistry