Captain America
what is a solution?
what is a mixture?
made up of more than one substance mixed together in a way that they can be easily separated.
What is an element?
that is made up of only one type of atoms.
what is solute?
the substance dissolved in a solution.
what are two parts of a solution called as?
solute and solvent
give two ways with which can you separate mixtures?
magnet, sorting, sieving,
why gases don't have a definite shape and volume?
their particles are far from each other, they may expand or squeeze easily.
why do solids have a definite shape?
their particles are very tightly packed.
why liquids do not have definite shape?
their particles have space between them, so they can glide past each other.
by adding water to a mixture, which things will float on top: heavy or light?
light
what is plasma?
is the fourth state of matter that
is similar to a gas and solid.
how does condensation occur?
As the air temperature decreases, water vapor condense to form liquid water droplets.
in what two ways will salt dissolve faster in water?
stirring, grinding, heating
If the motion and arrangement of particles in a material changes, what happens to its state or phase of matter?
its phase changes
If you had a bucket that contained a mixture of sand and seashells, how might you use the physical properties of the seashells to separate them from the sand
by sorting with hands
what physical properties should be kept in mind while choosing a material for making heating pan?
its melting point should be high
are all mixtures solutions?
no
are all solutions mixtures?
yes
what is freezing point of water?
0 degrees Celsius
what is the boiling point of water?
100 degrees celsius
by what process do the clothes dry out, even when it is not hot enough to boil water out of clothes?
evaporation from the surface.
how does a compound differ from a mixture?
components of mixture retain their physical properties and can be easily separated.
what makes the matter form three different states of solids, liquids and gases?
motion and arrangement of particles.
a substance fills a small cup completely. When it is transferred to a bigger cup, it fills only half of it. What is its state of matter?
liquid.
how is dew formed?
by condensation of water vapor during cool temperature of morning.