- Question: True or False: A heterogeneous mixture is uniform throughout where you can’t see or feel differences, while a homogeneous mixture is not uniform throughout and has different sized parts.
2. Question: Choose the correct statement:
Answer:
Solids: Definite shape, definite volume, always vibrating
Liquids: No Definite shape, definite volume, takes shape of container
Gases: No definite shape, no definite volume, takes shape of container
3. Question: Matching
Proton = Positive
Neutron = Neutral
Electron = Negative
4. Question: What are the electrons found on the outer shell of a Bohr Diagram.
Answer: Valence Electrons
5. Question: How many protons, neutrons and electrons does potassium (K) have?
Answer: P: 19
N: 20
E: 19
6. Question: What is the atomic number and atomic mass for Ag (Silver)?
Answer:
Atomic Number: 47
Atomic Mass: 108
7. Question: Which of the following are indicators of a healthy water source?
Answer: low temperature, high dissolved oxygen, and neutral pH
8. Question: Label the numbers on the pH scale accurately.
Answer:
0-6: Acidic
7: Neutral
8-14: Basic
9. Question: What is turbidity?
Answer: How cloudy a body of water is.
10. Question: Which is the best example of a pure substance?
Answer: Gold (Or, whatever is an element)
11. Question: Which will most likely result if there is increased upwelling in a coastal area?
Answer: More aquatic life
12. Question: Question: Which best determines the health of a lake used as a source of freshwater?
Answer: Temperature and pH
13. Question: Why is water from an aquifer more likely to be cleaner than water from other sources?
Answer: Because pollutants are filtered by rock and soil deep within Earth
14. Question: If a body of water has high turbidity levels, what can most likely be concluded?
Answer: It is unsafe to drink
15. Question: Which best describes the characteristics of a river basin?
Answer: The land drained by a river and its tributaries
16. Question: Which would least likely have an impact on global climate change?
Answer: producing energy using hydroelectric plant
17. Question: Which is an example of a renewable energy resource?
Answer: biomass
18. Question: Which will most likely result if there is increased upwelling in a coastal area?
Answer: More aquatic life
19. Question: Which of these organisms is a producer in a marine ecosystem?
Answer: Algae