Chemistry
How many protons are there in Potassium?
19
What is the sugar that is the main product of photosynthesis?
Glucose
What is the unit of power?
Watt
Name the physicist who developed the theory of relativity.
Albert Einstein
The direction test tubes should be pointed when heating a substance.
away from people
Which gas is known as "laughing gas"?
Nitrous oxide
What is the organ in the human body that stores glycogen and helps remove toxins from the blood?
Liver
Light rays are ___ when travelling from air to glass.
bent/refracted/slowed down
Name the woman who played a crucial role in discovering the DNA double helix.
Rosalind Franklin
What is the instrument used to measure the electric current in a circuit?
Ammeter
Why do ice cubes float on water?
What is the tissue that transports sugars like glucose from the leaves to the rest of the plant?
True or False
A current-carrying wire has no magnetic field.
False
Who discovered and developed the theory of evolution by natural selection?
Charles Darwin
What equipment accurately measures 25 cm³ of liquid?
Pipette
What gas is produced from human waste?
Methane
True or False
In an elastic collision, kinetic energy before the collision and kinetic energy after the collision is conserved.
Who discovered the elements Radium and Polonium?
Marie Curie
When iodine solution is added to a substance containing starch, what is the colour change?
Brown to blue black
What is the most abundant noble gas?
Argon
This type of radiation consists of a particle with atomic mass of 4. What is the name of this radiation?
Alpha radiation
Who helped establish the law of conservation of mass?
Antoine Lavoisier