Acid and Alkali
What is the scale used to measure how acidic or alkaline a substance is
What is pH scale
Name the 3 types of heat transfer
what is: Conduction, convection, radiation
Cloud of dust and gas
What is: a nebula
Complete the sentence: Opposite poles attract and like poles.........
What is: REPEL
Name the 3 types of sub-particles found in an atom
Electron, proton, neutron
greenhouses gases mix with water to make toxic precipitation
What is ACID RAIN
Why does convection NOT happen in solids or in a vaccum?
Because the particles are not able to flow to make convection currents
Name of our star
What is: Sol
Magnetic field lines always move from the ....... to the ........
What is: North to south
What is an element?
•An element is a substance that cannot be broken down by physical and chemical reactions into a simpler form of matter.
Litmus is ...... in acid and ..........in alkali
Red ...Blue
Which type of heat transfer can occur in a vacuum?
What is: Radiation
Type of climate in Zimbabwe
What is : savanna
Name the 3 magnetic metals found naturally on Earth
Iron cobalt nickel
What do we call the energy levels of electrons that are surrounding the nucleus?
Shells
What is the name of the chemicals used to detect if something is an acid or alkali?
Indicator
Particles at the surface of liquid gain enough kinetic energy to escape into the air and form a gas. What is this process?
What is EVAPORATION
small rocky objects that orbit a star the way planets do
What is: asteroid
Inside a magnet, the .......... are all lined up
What is: DOMAINS
The groups are going top to bottom and periods are left and right: TRUE OR FALSE
TRUE
Neutralisation the type of reaction where acid and alkali mix to make a........ and .........
What is SALT and WATER
When you burn your hand on the pot, what type of heat transfer has occured?
What is CONDUCTION
Name of the galaxy you occupy
Milky Way
Is an electromagnet a permanent or temporary magnet?
What is: TEMPORARY
Is calcium a metal or non-metal
Group 2 metal