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Chemistry Fundamentals: Matter and Changes

Tests basic concepts of chemistry including atoms, molecules, mixtures, pure substances, and physical vs chemical changes

10 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is/are neutral particle(s)?

  1. Proton
  2. Electron
  3. Atom
  4. All of the above
Question 2 Multiple Choice (Single Answer)

Name the smallest particle of matter.

  1. Mixture
  2. Compound
  3. Atom
  4. Colloid
Question 3 Multiple Choice (Single Answer)

Which of the following is a mixture?

  1. Sodium
  2. Air
  3. Water
  4. Sodium hydroxide
Question 4 Multiple Choice (Single Answer)

Which of the following turns lime water milky?

  1. Chlorine
  2. Oxygen
  3. Carbon dioxide
  4. Hydrogen sulphide
Question 5 Multiple Choice (Single Answer)

Which of the following is a pure substance?

  1. Oxygen gas
  2. Air
  3. Sugar solution
  4. Soil
Question 6 Multiple Choice (Single Answer)

An impure substance melts at a temperature _____ its standard melting point.

  1. same as
  2. lower than
  3. higher than
  4. none of these
Question 7 Multiple Choice (Single Answer)

Which of the following changes represent(s) a chemical change?

  1. Cooking of food
  2. Rusting of iron
  3. Butter turning rancid
  4. All of the above
Question 8 Multiple Choice (Single Answer)

Which of the following is a correctly matched pair?

  1. Tearing of paper : Chemical change
  2. Melting of ice : Physical change
  3. Curdling of milk : Physical change
  4. Rusting of iron : Physical change
Question 9 Multiple Choice (Single Answer)

How many atoms are there in a chlorine molecule?

  1. 2
  2. 1
  3. 0
  4. 3
Question 10 Multiple Choice (Single Answer)

What is the melting point of ice?

  1. 100�C
  2. 273�C
  3. 273 K
  4. 0 K
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