Worksheetsscience revision
Total questions: 9
Worksheet time: 5mins
what is the law of conservation of mass?
energy can be created but not destroyed
energy can be either created or destroyed
energy can not be created or destroyed
energy can be destroyed but not created
what is Avogadro’s number?
4.022 x10^23
6.022 x10^23
3.042 x 10^21
4.062 x 10 ^21
How do you calculate mass using the mr and moles?
mass = Mr x moles
mass = Mr / moles
mass + Mr = moles
mass = moles + Mr
what are the three main types of radiation ?
Alpha, Beta , Gramm
Beta, Gamm and ions
ions, emissions, gamma
alpha, beta and gamma
What are the uses for Beta Radiation?
traces for medical images
preserving human bodies
smoke detectors
treatment for cancer
what is half-life?
when an atom splits into two daughter cells
time taken for a sample of radioactive atoms to double in size
time taken before half of a sample of radioactive atoms to decay
time taken for mitosis to occur
what is the equation for power (using energy transfer and time)?
p = e x t
p = e / t
w = e / t
w = e x t
What is NOT a force?
Gravity
Running
Pulling
Upthrust
What is resistance measured in?
Ohms
Watts
Amps
Volts
