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Science Concepts and Evidence

Grade 10 · On-level practice · 8 questions · Version PG-XI4P58-1AI3

1.

What is a mole?A. 6.022 x 10^23 particles B. Ionic bond C. It increases D. An acidic solution

2.

What does an atomic number count?A. Ionic bond B. Atoms of each element C. Protons D. 6.022 x 10^23 particles

3.

What is an isotope?A. Atoms of one element with different neutron counts B. Ionic bond C. Protons D. An acidic solution

4.

What happens to reaction rate when temperature usually rises?A. 6.022 x 10^23 particles B. It increases C. Atoms of one element with different neutron counts D. Atoms of each element

5.

What type of bond transfers electrons?A. 6.022 x 10^23 particles B. Atoms of each element C. Protons D. Ionic bond

6.

What does pH below 7 indicate?A. Covalent bond B. An acidic solution C. It increases D. Atoms of each element

7.

What must a balanced chemical equation conserve?A. Atoms of each element B. Covalent bond C. An acidic solution D. Atoms of one element with different neutron counts

8.

What type of bond shares electrons?A. It increases B. 6.022 x 10^23 particles C. Ionic bond D. Covalent bond

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 3
  1. What is a mole?6.022 x 10^23 particles
  2. What does an atomic number count?Protons
  3. What is an isotope?Atoms of one element with different neutron counts
  4. What happens to reaction rate when temperature usually rises?It increases
  5. What type of bond transfers electrons?Ionic bond
  6. What does pH below 7 indicate?An acidic solution
  7. What must a balanced chemical equation conserve?Atoms of each element
  8. What type of bond shares electrons?Covalent bond

Worked example

Read the direction, identify the assessed skill, solve or cite evidence, and check the response.

Common mistake

Using a memorized procedure without checking what the question asks.

Helpful hint

Name the standard skill before answering.