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Science Concepts and Evidence

Grade 10 · Stretch challenge · 8 questions · Version PG-12T8WOA-19D7

1.

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

2.

What does an atomic number count?A. It increases B. Covalent bond C. 6.022 x 10^23 particles D. Protons

3.

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

4.

What does pH below 7 indicate?A. Covalent bond B. 6.022 x 10^23 particles C. An acidic solution D. Atoms of one element with different neutron counts

5.

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

6.

What is a mole?A. Protons B. 6.022 x 10^23 particles C. Atoms of one element with different neutron counts D. Atoms of each element

7.

What is an isotope?A. It increases B. Atoms of each element C. 6.022 x 10^23 particles D. Atoms of one element with different neutron counts

8.

What happens to reaction rate when temperature usually rises?A. It increases B. An acidic solution C. Covalent bond D. 6.022 x 10^23 particles

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

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.