Podcast
Questions and Answers
Which term describes a mixture of two or more metals or a metal and a non-metal that cannot be separated into their components by physical methods?
Which term describes a mixture of two or more metals or a metal and a non-metal that cannot be separated into their components by physical methods?
- Solute
- Solvent
- Alloy (correct)
- Solution
In the alloy brass, what is the percentage composition of zinc?
In the alloy brass, what is the percentage composition of zinc?
- 70%
- 21%
- 30% (correct)
- 15%
What is the solute in a solution of iodine in alcohol (tincture of iodine)?
What is the solute in a solution of iodine in alcohol (tincture of iodine)?
- Alcohol
- Oxygen
- Iodine (correct)
- Zinc
Which component of a solution dissolves the other component in it and is usually present in larger amount?
Which component of a solution dissolves the other component in it and is usually present in larger amount?
Which type of solution are aerated drinks like soda water classified as?
Which type of solution are aerated drinks like soda water classified as?
What is the approximate oxygen content in air, which is a homogeneous mixture of gases?
What is the approximate oxygen content in air, which is a homogeneous mixture of gases?
Which activity from the text suggests that particles of matter have force acting between them?
Which activity from the text suggests that particles of matter have force acting between them?
What kind of particles are being compared to students in the text?
What kind of particles are being compared to students in the text?
Which substance from the options is likely to have its particles held together with the greatest force?
Which substance from the options is likely to have its particles held together with the greatest force?
Why can a diver cut through water in a swimming pool?
Why can a diver cut through water in a swimming pool?
Which substance from the options is not considered matter?
Which substance from the options is not considered matter?
Why does the smell of hot sizzling food reach you from several meters away compared to cold food?
Why does the smell of hot sizzling food reach you from several meters away compared to cold food?
What is the building block of all matter according to the text?
What is the building block of all matter according to the text?
How are atoms described in terms of size?
How are atoms described in terms of size?
What did Berzilius suggest about the symbols of elements?
What did Berzilius suggest about the symbols of elements?
Which scientist was the first to use symbols for elements in a specific sense?
Which scientist was the first to use symbols for elements in a specific sense?
How is the atomic radius of an atom typically measured?
How is the atomic radius of an atom typically measured?
What did Dalton's postulate help explain?
What did Dalton's postulate help explain?
What causes the palm to feel cool when acetone (nail polish remover) is poured on it?
What causes the palm to feel cool when acetone (nail polish remover) is poured on it?
Why do people sprinkle water on a hot roof or ground after a sunny day?
Why do people sprinkle water on a hot roof or ground after a sunny day?
Why does cotton clothing help in keeping the body cool during summer?
Why does cotton clothing help in keeping the body cool during summer?
Why do we see water droplets on the outer surface of a glass containing ice-cold water?
Why do we see water droplets on the outer surface of a glass containing ice-cold water?
In which process do particles at the surface of a liquid gain energy from the surroundings and change into vapor?
In which process do particles at the surface of a liquid gain energy from the surroundings and change into vapor?
Why does a desert cooler cool better on a hot dry day?
Why does a desert cooler cool better on a hot dry day?
What was initially used as the basis for the atomic mass unit?
What was initially used as the basis for the atomic mass unit?
Why was the 1/16 of the mass of an oxygen atom chosen as the initial atomic mass unit?
Why was the 1/16 of the mass of an oxygen atom chosen as the initial atomic mass unit?
Why was the carbon-12 isotope chosen as the standard reference for measuring atomic masses in 1961?
Why was the carbon-12 isotope chosen as the standard reference for measuring atomic masses in 1961?
What does one atomic mass unit equal?
What does one atomic mass unit equal?
How does the analogy of selling fruits by relative mass units relate to atomic masses?
How does the analogy of selling fruits by relative mass units relate to atomic masses?
What is the purpose of using a standardized atomic mass unit?
What is the purpose of using a standardized atomic mass unit?
