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Tenth Grade (Grade 10) Chemistry Questions

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Grade 10 Atomic Structure

This question is a part of a group with common instructions. View group »

A neutral atom contains 12 neutrons and 11 electrons. What is the number of protons in this atom?
  1. 12
  2. 23
  3. 1
  4. 11
Grade 10 Kinetics and Equilibrium
According to the kinetic theory, at a higher temperature the molecules of a gas                  .
  1. move more rapidly
  2. move more slowly
  3. become lighter
  4. none of the above
Grade 10 Reactions
How are reactions related to chemical bonds?
  1. bonds in the reactants are broken and bonds in the products are formed
  2. bonds in the products are broken and bonds in the reactants are formed
  3. bonds are formed in both the reactants and products
  4. none of the above
Grade 10 Macromolecules
A monosaccharide is a                .
  1. carbohydrate
  2. lipid
  3. nucleic acid
  4. protein
Grade 10 Periodic Table and Elements
A substance that contains only one kind of atom is called a/an                .
  1. mass
  2. shell
  3. compound
  4. element
Grade 10 Properties of Matter
Which of the following measurements contains three significant figures?
  1. 200 mL
  2. 0.02 mL
  3. 20.2 mL
  4. 200.0 mL
Grade 10 Periodic Table and Elements
Which of the following element-chemical symbol pairs is matched incorrectly?
  1. Sodium - So
  2. Iron - Fe
  3. Aluminum - Al
  4. Helium - He
Grade 10 Acids and Bases
A neutral solution has a pH of
  1. 4.
  2. 5.
  3. 6.
  4. 7.
Grade 10 Acids and Bases
Substances with a pH higher than 7 are                .
  1. acids
  2. bases
  3. neutral
  4. radicals
Grade 10 Periodic Table and Elements
The atomic number of an element is same as the number of
  1. protons.
  2. neutrons.
  3. protons + electrons.
  4. protons + neutrons.
Grade 10 Periodic Table and Elements
The atomic mass of an element is the sum of                      and                     .
  1. protons / electrons
  2. neutrons / protons
  3. neutrons / electrons
  4. protons / particles
Grade 10 Periodic Table and Elements
An atom is electrically neutral if the number of                                            .
  1. electron is equal to the number of neutrons
  2. neutrons is equal to the atomic number
  3. protons is equal to the neutrons number
  4. protons is equal to the number of electrons
Grade 10 Reactions
What is a reaction in which two or more substances react to form a single substance?
  1. single reaction
  2. synthesis reaction
  3. combustion
  4. none of the above
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