Objective 10
Objective 11
Objective 13
Objective 14
Objective 16
100
What is the law of refraction?
Light hitting a mirror will bounce of at the same angle
100
What is an echo?
Bouncing of sound waves off an object.
100
Compare and Contrast Pure Substances and Mixtures
Same: examples of matter Different: PS- Definite chemical compostion M- variable composition Example:PS- Carbon M- Salt Water
100
Which element has greater electronegativity: Carbon or Oxygen? Explain.
Oxygen. Right side of table so it is more electronegative More protons to attract electrons to its outer shell
100
Compare and Contrast chemical and physical properties. Give example of each
Chemical: How substance will react ex. flammability Physical: Appearance ex. color
200
What is refraction?
Bending of light as the light waves travel from one substance to another.
200
What is resonance?
When an object with a specific frequency can induce a vibration in another object
200
Which element has greater electronegativity: strontium or magnesium
Magnesium. Greater ability to attract an electron because it has fewer electron levels to shield the nucleus.
200
What is evidence of a chemical change?
gas formed solid formed addition/removal of heat color change
300
How does refraction occur?
Change in the speed of light through different materials
300
What causes resonance?
When initial frequency and objects natural frequency are the same.
300
How can you be sure a chemical change has occurred?
When a new substance is formed
400
What is an example of resonance?
Tuning fork, wine glass
400
What is the difference between physical and chemical changes. use an example.
Chemical: New substance being formed ex. adding borax to glue and water Physical: Don't change chemical makeup of the substance ex. glue and water being mixed
500
Describe the 3 characteristics of sound(pitch, intensity, and quality). How do they relate to wave structure?
Pitch- Highness or lowness of sound and is related to frequency of the wave Intensity- The loudness of sound and is related to amplitude Quality- Combination of waves present within a sound
M
e
n
u