Biology
Chemistry
Physics
Mix 1
Mix 2
100
A group of organisms that can reproduce together to produce fertile offspring
Species
100
A mixture of two metals or of a metal and a non-metals
alloy
100
What force acts when two forces rub against each other?
Friction
100
The name of the reaction where an acid is cancelled out by an alkali. A neutral solution has a pH of 7
neutralisation
100
Energy stored in an object due to gravity
Gravitational
200
Name two specialised cells found in plants.
Root hair cell & palisade cell
200
Write down the word equation of the reaction between magnesium and nitric acid.
magnesium + nitric acid --> magnesium nitrate + hydrogen
200
Explain how the mass of an object on Mars would compare with the mass of the same object on Earth.
It would be the same; mass is the quantity of matter in an object, mass is not affected by ( the strength of) gravity.
200
In which part of the Periodic Table are metals located?
Left
200
When a snowman melts, what two changes of state that happen?
Melting and Evaporation
300
Name at least 3 structures of a cell
Cell Membrane
Cell Wall
Nucleus
Cytoplasm
Chloroplast
300
List three non-metal elements base on this list.
Copper, carbon, steel, tin, zinc, sulfur, nickel, chromium, neon, iron, gold, magnesium, calcium, aluminium, lead, silver.
carbon, sulfur, neon
300
The law of conservation of energy states that...
energy cannot be created or destroyed, but can be transformed or transferred
300
Name two contact forces
Air resistance & Friction
300
A formula of magnesium sulphate is MgSO4. Name the three elements that combine to form this compound.
Magnesium, sulfur, oxygen
400
1. ........... is the smallest structural and functional unit of a living organism.
2. A group of similar cells is called a ...........
3. An .............. is a structure made of many different tissues.
4. An ...... is a group of organs that carry out a particular function.
Cell, tissue, organ, organ system
400
Give the names of the elements with these symbols.
Ar, P , K, S, Si, Na
argon, phosphorus, potassium, sulfur, silicon, sodium
400
State the energy transformations when you are playing on a slide at the playround
Chemical (body) → kinetic → gravitational potential energy (on top of the slide) → kinetic (slides down) + heat (friction)
400
True or false? There is very little space between the arrangement of particles of a liquid. There is a lot of space between the arrangement of particles of a gas.
True
400
Look at the following word equations or chemical equations, interpret what do you understand about these equations:
Zinc + sulfuric acid → zinc sulfate + hydrogen
Zinc reacts with sulfuric acid to produce zinc sulfate and hydrogen
500
What is the difference between omnivores, carnivores and herbivores?
omnivores eat plants and animals, carnivores just eat other animals, herbivores just eat plants
500
Where does neon located in the Periodic Table?
Is neon a metal or a non-metal?
Group 8, Period 2
Non-metal
500
1. ................ is how loud or soft a sound is.
2. .......... is how high or low the sound is.
3. .......... is how far it vibrates from its resting position.
4. ........... is the number of vibration per second.
5. The ........ of a sound depend upon the vibration per second.
6. Loudness of sound depends on its .........
7. A................... amplitude sound has a soft sound.
1.Loudness 2.pitch 3.amplitude 4.frequency 5.pitch 6. amplitude 7. low
500
What is the gas produced in the reaction of metals with acid?
How could you test this gas?
Hydrogen
If hydrogen is present, a lighted splint will burn with squeaky pop
500
Name a compound that contains sodium, carbon and oxygen.
Name a compound that contains potassium, phosphorus and oxygen.
Sodium carbonate
Potassium phosphate