Midterm Exam Review-
Terms to know-
1. qualitative data
2. quantitative data
3. hypothesis
4. variable
5. theory
6. scientific law
7. dependent variable
8. independent variable
9. technology
10. accuracy
11. precision
12. constant
sample questions/ ideas to know-
- what is a planned procedure to test a hypothesis?
- How do you convert meters to kilometers? To millimeters?
- What are the safety symbols for: fire/ flames, poison, eye hazard, electricity
- What does a beaker look like? A flask? A graduated cylinder?
- Which kind of graph is used to show changes between two numerical sets of data? Percents or parts of a whole?
- What is scientific notation?
Terms to know:
1. distance
2. displacement
3. speed
4. velocity
5. acceleration
6. Law of Inertia
7. Net force
8. Inertia
Sample questions/ ideas-
- what happens to inertia as mass increases? Decreases?
- What is the difference in instanaeous speed and average speed?
- Why might a drink fall off your lunch tray if you suddenly stop walking?
- Explain the difference in distance and displacement?
- How do you calculate speed? Acceleration?
- How is speed different from velocity?
Terms to know:
1. newton
2. balanced force
3. unbalanced force
4. friction
5. gravity
6. air resistance
7. weight
8. mass
9. centripetal force
10. momentum
sample questions/ ideas to know:
- as two objects’ mass increases, the force of gravity between these objects will?
- What is the difference between mass and weight?
- How does mass and gravity affect weight?
- Why does a projectile follow a curved path?
- If a rock is dropped from a building 40 meters high, what is its speed after 5 seconds?
- If a book has a mass 3 kg, what is its weight in Newtons?
- Explain why Newton’s 3rd law allows us to walk?
- What is Newton’s 2nd Law?
- What forces act on a falling object?
Terms to know-
1. heterogeneous mixture
2. homogeneous mixture
3. viscosity
4. physical property
5. chemical property
6. density
7. element
8. compound
sample questions/ideas to know-
- how is a mixture different from a compound?
- Explain why a burning candle exhibits both physical and chemical changes?
- How do you calculate density?
Terms to know-
1. proton
2. neutron
3. electron
4. nucleus
5. isotope
6. atomic number
7. mass number
8. alpha particle
9. beta particle
10. gamma ray
Sample questions/ ideas-
- what is the difference between an atom in the excited state versus the ground state?
- What happens as you move left to right across the periodic table
- What does the number of valence electrons determine about an element?
- How do you illustrate a specific isotope? Example- carbon with a mass of 13
- What makes a metal different from a nonmetal? A metalloid?
- Which subatomic particle determines the atoms’ identity?
- How is the periodic table organized?
- What are some examples of positive uses of nuclear technology?
- Draw the electron dot diagram for calcium? Oxygen? Neon?