Most important science Flashcards
In blue litmus what colour is acid, base and neutral?
red acid, blue base, no change in neutral
In red litmus what colour is acid, base and neutral?
red acid, blue base, no change in neutral
What happens to the bulbs when switches are opened or closed?
When a switch is open the electrons can leave therefore the light will be off and vis verse
In phenolphthalein what colour is acid, base and neutral?
colourless acid, red/pink base, colourless neutral
what are lines around a magnet called?
Magnetic field lines
Where do the lines around a magnet go?
Into the south
What happens when there are more and less field lines?
More is stronger and less is weaker
What is an example of a practical we did to test magnetic strength?
Paper clip practical. The more paper clips the magnet held, was the stronger the magnet
metal + acid = ?
salt + hydrogen
metal carbonate + acid = ?
salt + water + carbon
acid + base =?
salt + water
What is static electricity?
when charges collect on a surface and don’t flow away immediately. they don’t allow the flow of electrons
What is current electricity?
The flow of electrons through a material
On the pH what are the bases and acids?
Below 7 is acid, above 7 is base, 7 is neutral
Where does the IV and DV go?
IV goes on the bottom and Dv on the line going up
