Do not move on to the next question until you have answered the present one correctly.
Here are two fundamental properties of matter:
Weight and
molecular structure.
Mass
and taste.
Volume
and mass.
Air
is a gas that...
does
not weigh.
has no mass.
has mass and volume.
Matter is made up of particles
which are immaterial,
without mass or volume.
which are spiritual and
undetectable.
which are material.
The units used to measure mass are:
kg,
g, mg, t (tonnes).
Weight.
Kg/m3
The volume of a cube is...
The cube (the third power) of the length of the edge.
The square (second power) of the length of the edge.
Triple the area of the base times the height.
A volume can be measured in the following units (mark all the correct answers):
Cubic milimetres.
Square metres.
Square centimetres multiplied by kilometres.
If we pour water into a test tube until it reaches the 300 ml mark (300 cubic centimetres)
and we then drop a 220 g stone that moves the water up to the 350 ml mark, what is the stone's density?
0.227
cubic centimetres per gram.
4.4
grams per cubic centimetre.
40
grams per cubic centimetre.
The gravitational force (of attraction) between two bodies is greater...
the greater the mass of the bodies and the shorter the distance that separates them.
the greater the mass of the bodies and the distance between them.
the smaller the mass of the bodies and the shorter the distance between them.
What particles make up the atom?
Protons and neutrons in the nucleus and quarks orbiting around them.
Neutrons orbiting around the nucleus, which is formed by protons and electrons.
Electrons orbiting around the nucleus, which is formed by protons and neutrons (which in turn are made up of quarks).
The particles that make up matter
are so close to one another that they leave no space among them. They form a continuous entity.
are separated from one another. The electrons are separated from the nuclei and the protons are separated from the neutrons. They therefore form a discontinuous entity.
are so close to each other that it is impossible to separate them.
When a living being dies...
all the particles in the matter that it is made of stop moving.
all the particles in the matter that it is made of except electrons stop moving.
all the particles that made up the living being continue to move in the dead body and in the matter that the corpse will turn into.
How would you define inanimate matter?
Matter which is not alive.
Matter in which the particles are at rest.
Matter at rest in which the particles are at rest.
The atoms and other particles that make up matter are...
at rest in solid matter, moving slightly in liquids and moving freely in gases.
always moving around.
at rest in fixed positions.
An element is distinguished from a compound because...
an element does not form molecules, while a compound does.
elements are made up of molecules and compounds are made up of atoms that form crystals.
an element is made up of identical atoms (it does not matter whether or not they form molecules), while a compound is made up of different kinds of atoms (that may or may not form molecules).
The distance between the atoms (or molecules) of solids, liquids and gases are...
identical or very similar.
similar in solids and liquids, but different in gases (where they are much greater).
large in solids, small in liquids and even smaller in gases.
During a change of state from solid to liquid or liquid to gas, the temperature...
increases.
decreases.
remains constant.
What do you call the change of state that goes directly from solid to gas?
ebullition.
evaporation.
sublimation.
What do you call the change of state from liquid to solid?