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Science Concepts and Evidence

Grade 10 · Stretch challenge · 8 questions · Version PG-11ZA3LD-19D7

1.

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

2.

What must a balanced chemical equation conserve?A. Atoms of each element B. 6.022 x 10^23 particles C. Protons D. An acidic solution

3.

What type of bond transfers electrons?A. Atoms of one element with different neutron counts B. It increases C. Ionic bond D. Protons

4.

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

5.

What does an atomic number count?A. Protons B. It increases C. Covalent bond D. Atoms of each element

6.

What type of bond shares electrons?A. Ionic bond B. Atoms of one element with different neutron counts C. Protons D. Covalent bond

7.

What does pH below 7 indicate?A. Atoms of each element B. 6.022 x 10^23 particles C. Protons D. An acidic solution

8.

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