The Periodic Chapter
Give 1 physical property and 1 chemical property
Physical: color, melting point, boiling point, density, ductility, malleability, conduction of heat, conduction of electricity, etc.
Chemical: Flammability, reactivity with oxygen, reactivity with water, reactivity with acids, reactivity with alkalis, reactivity with other substances, corrosiveness, toxicity, stability, thermal decomposition.
Describe what happens when light rays hit:
(a) Opaque materials
(b) Translucent materials
(c) Transparent materials
(a) Opaque: Reflected, Absorbed
(b) Translucent: Scatters
(c) Transparent: Transmitted
Convert 522 to binary.
1000001010
Write a word equation for
(a) Potassium reacting with water
(b) Lithium reacting with Oxygen
(a) Potassium + Water --> Potassium Hydroxide + Hydrogen
(b) Lithium + Oxygen --> Lithium Oxide
3 Characteristics of images formed in a plane mirror
1. Image is the same size as the object.
2. Image is the same distance behind the mirror as the object in front of the mirror
3. Left and right swapped
Convert the following binary to denary.
11010110111
1719
Give all 3 trends of the periodic table that we learned in class
Down Group 1==> Melting point decreases
Down Group 1==> Reactivity increases
Left is more alkaline, Right is more acidic
For both Light and Sound, state their
(a) Type of wave
(b) Speed in air
(c) Travels through
Light: Transverse, 3x10^8m/s, Vacuum + SLG
Sound: Longitudinal, 330m/s, SLG only
Perform the following binary addition. Then convert the final answer to denary.
110110 + 111111
Addition: 1110101
Final answer: 170
Draw a complete heating curve of ice at -30C that is heated continuously.
- Temperature Axis (and Celsius unit)
- Time axis
- Starts at -30C
- Rise
- Flat at 0C, Melting label at 0C
- Rise
- Flat at 100C, Boiling label at 100 C
- Rise
Draw a ray diagram for light ray travelling from water to air
1. Include 2 Arrows
2. Bend away from the normal
3. Include normal line
Define:
(a) Pixel
(b) Resolution
(c) Relationship between pixel and resolution
(d) Relationship between physical size of image and resolution
(a) Tiny colored square
(b) Total pixels over a certain area
(c) More pixels ==> Higher resolution
(d) large physical size ==> Lower resolution
Give all 5 statements from John Dalton's atomic theory
- All matter made of atoms
- Atoms in element ==> All identical / Same type
- Atoms cannot be created or destroyed
- In compounds, each atom is joined to a fixed number of other atom types
- During chemical reactions, atoms rearrange to form new substances (and there is no change in mass)
Give all details about Refraction (everything we've learned in class)
1. Refraction ==> Direction change when light travels to another transparent medium
2. Occurs because light changes speeds in different medium
3. Occurs because the density is different
4. Less Dense to more dense ==> Bends towards normal, Speed becomes slower
5. More Dense to less dense ==> Bends away from the normal, Speed becomes faster
Give definitions for:
(a) Motherboard (b) RAM (c) PSU (d) CPU (e) Hard Drive (f) Graphic Cards
(a) Main Circuit board, other components connect to it
(b) Short term memory, stores program data and results from calculations
(c) Supply power to components
(d) Brain, Carries out processing work, links input with output,
(e) Main Storage. Stores everything.
(f) Process video, images