seneca Flashcards
How does water freezing to become ice affect its mass?
its doesn’t.
the mass stays the same
What is the equation for density?
density = mass / velocity
Name the three main subatomic particles that make up an atom:
Electrons
Protons
Neutrons
What two stores of energy are added together to calculate the internal store?
Kinetic store
Potential store
What do we call the energy that is transferred to a substance without the substance’s temperature changing?
Latent heat
How does doing work on a gas affect the energy in its kinetic store and its temperature?
- The temperature of the gas increases
- The amount of energy in the kinetic store of the gas increases
What is the overall charge of atoms?
neutral
What does the nucleon number refer to?
total number of protons and neutrons in a nucleus
What do we call the process of an unstable nucleus randomly emitting ionising radiation to become more stable?
radioactive decay
what are Isotopes
atoms of the same element that have different numbers of neutrons
Which type of ionising radiation results in the emission of helium nuclei?
alpha radiation
How many protons and neutrons are found in an alpha particle?
2 protons
and
2 neutrons
What are the features of scalar quantities?
has magnitude but no direction
equation for calculating the change in momentum?
force x time
What do we call the point through which an object’s weight appears to act?
Centre of mass
