Chemistry
Name any 3 non-metals, 3 metals and 1 metalloid.
Accept appropriate responses.
Give the 9 SI units for the 9 Quantities that we learned in class.
length: m, area: m2, volume: m3, mass: kg, time: s, speed: m/s, energy: J, force: N, pressure: Pa
Your computer can connect to the internet using a wireless or a wired connection. What is the name of the cable that is used for wired internet connection?
(a) What does KFC stand for?
(b) What is the value for pi in math?
(a) Kentucky Fried Chicken
(b) 3.14
What is the difference between Elements, Molecules and Compounds?
Elements: Made of 1 type of atom
Molecules: 2 or more atoms chemically joined
Compounds: Different types of atoms chemically joined
Explain Friction and everything that we learned in class.
- Friction: Force between two objects that are touching
- Slows down objects
- Rough surfaces ==> More friction
- Friction produces heat and noise
What is Wifi Encryption and what does it prevent?
- Wifi Encryption: Wireless networks are password protected
- Prevents unauthorized users from connecting to the network
What is the Japanese art of folding paper called?
Origami
(a) When heat is used to break down Copper Carbonate, this process is called ________.
(b) Give the full word equation for this reaction.
(c) Describe how to test for the gas produced in this reaction
(a) Thermal Decomposition
(b) Copper Carbonate --> Copper Oxide + Carbon Dioxide
(c) Put gas in limewater / If cloudy --> it is CO2
Explain all differences between Mass and Weight.
2. Mass is fixed. Weight depends on the planet that you are on. Different planets have different gravitational force
3. SI Unit for Weight: Newtons
Explain how a wifi connection is less expensive than a wired connection
No need to buy additional cables
Excluding today, how many days are there left until Christmas?
175 days
(a) Describe what is happening, in terms of atoms, when a compound is formed.
(b) Give 4 common observations that can be made during chemical reactions.
(a) Reactants are heated, Reactants break apart, Reactants rearrange to form new compounds
(b) Color change, Gas produced, New substance formed, heat released
Define (a) Gravity, (b) Static Electricity, (c) Upthrust, (d) Mass, (e) Water Resistance
(a) Force of attraction between two objects
(b) Non-contact force that can attract or repel
(c) Force that pushes things up in liquids & gases
(d) Amount of matter that makes up an object
(e) Force on objects moving through water
(a) Give 3 different disadvantages of using a wireless wifi network connection.
(b) Give 3 advantages of using a wireless wifi network connection.
(a) (Any 3) Interference due to thick walls or devices, Limited range of signal, Hackers, Slower speeds
(b) (Any 3) No physical cable needed, Connect from comfortable position, Password Protection, No need for additional cables to add more users/devices
(a) In which township is our school in?
(b) In which township is Myanmar Plaza in?
(a) South Okkalapa township
(b) Bahan township
(a) Give all properties of metals and non metals.
(b) State what is special about Mercury
(c) State what is special about Carbon
(a) Shiny / Dull, Malleable Ductile / Brittle, Good Conductors of Heat & Electricity / Bad, High Melting Points / Low
(b) Metal but low melting point and is liquid at room temp
(c) Non-metal but some forms have high melting points
(b) SI Unit for Pressure?
(c) Describe ways to increase or decrease pressure.
(d) How much pressure is applied by an object that is 5m2 wide applying a force of 300N?
(a) Force over a certain area
(b) Pascals
(c) Smaller surface area ==> Higher Pressure
(d) 150 Pa
(a) How does your mobile phone connect to mobile internet?
(b) Give 3 disadvantages of using mobile internet.
(c) Give 2 advantages of using mobile internet.
(a) Via radio waves + Connects to the mast/tower
(b) Any 3 from (Battery life, expensive, needs upgraded phone due to technology changes, peer pressure pushes for new phones)
(c) Any 2 from (Usable on the move, No need for home internet, Hotspot sharing, Video conferencing)
(a) Which country has the largest population in the world?
(b) Who is known for Heeeheee?
(c) What 2 things must an absent CliveyStudent do?
(d) How many zeros are there in 1 million?
(a) India
(b) Michael Jackson
(c) Submit leave request form, Come at 7:30 on the next day
(d) 6 zeros