PencilGoPencilGo

Science Concepts and Evidence

Grade 10 · On-level practice · 8 questions · Version PG-YE869S-1AI3

1.

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

2.

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

3.

What type of bond shares electrons?A. Covalent bond B. Protons C. An acidic solution D. Ionic bond

4.

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

5.

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

6.

What is a mole?A. 6.022 x 10^23 particles B. Atoms of one element with different neutron counts C. An acidic solution D. Covalent bond

7.

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

8.

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

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

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.