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Science Concepts and Evidence

Grade 10 · Building confidence · 8 questions · Version PG-63W90Y-1RJY

1.

What happens to reaction rate when temperature usually rises?A. It increases B. Atoms of each element C. An acidic solution D. Covalent bond

2.

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

3.

What does pH below 7 indicate?A. An acidic solution B. Ionic bond C. 6.022 x 10^23 particles D. Covalent bond

4.

What type of bond transfers electrons?A. Protons B. Ionic bond C. Covalent bond D. Atoms of each element

5.

What must a balanced chemical equation conserve?A. It increases B. Ionic bond C. Protons D. Atoms of each element

6.

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

7.

What does an atomic number count?A. An acidic solution B. Covalent bond C. Ionic bond D. Protons

8.

What is a mole?A. 6.022 x 10^23 particles B. It increases C. Protons D. Ionic 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 12
  1. What happens to reaction rate when temperature usually rises?It increases
  2. What is an isotope?Atoms of one element with different neutron counts
  3. What does pH below 7 indicate?An acidic solution
  4. What type of bond transfers electrons?Ionic bond
  5. What must a balanced chemical equation conserve?Atoms of each element
  6. What type of bond shares electrons?Covalent bond
  7. What does an atomic number count?Protons
  8. What is a mole?6.022 x 10^23 particles

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.