physical changes
making lemonade is
physical change
boiling sugar to make caramel
chemical change
what are the four branches of life science
ecology,botany,zooology and genetics
how does Electricity work
Electricity is the movement of electrons between atoms
What produces a magnetic field.
magnetic field is invisible but is responsible for the most notable property of a magnet
what is a physical reactions
a reaction in which a change to the physical properties of a material or substance occurs.
what is a chemical change in a short sentence
any change that causes a new substance to be formed
is life science the same as biology
Biology is the scientific study of life and living organisms, whereas life science is a broader term that encompasses any scientific study of life
what is electricity made of
he electrons in the shell closest to the nucleus have a strong attraction to the protons. Sometimes the electrons in an atom's
All magnets have north and south poles how does it attract
When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up
is crushing a physical changes
obvious physical changes but to restore the original piece of paper or rock is difficult.
what is an chemical change experiment
bottle balloons
what branch of science is life science
biology, natural
how is electricity created
with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy.
how do magnets work without touching
things made of iron, nickel or cobalt that are located within it. (Because its interior acts like a magnet, the Earth is surrounded by a magnetic field that affects things made of.
what are 7 physical changes
melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.
is popping popcorn
popping popcorn is not a chemical reaction
is life science medical
Biology, medicine and agriculture are the most obvious examples of the discipline
what is the main source of electricity
fossil fuel
how does magnets repel
magnets will be pushed in the direction that decreases the amount of stored-up energy. That is, they are forced apart (repelled)
what is a non physical change
burning wood
is milk going sour a chemical change
original substances present in milk lose their nature and identity and form new chemical substances.
is nursing a life science
Nursing is a basic science, just like biology
is electricity renewable
Electricity can be both a renewable and nonrenewable resource. Whether electricity is renewable or nonrenewable depends on how it was generated.
what happens when 2 magnets are forced
the magnetic field lines are perturbed, just as happens for electric field lines when two electric charges are brought together.