(2) a diatomic molecule
(3) a heterogeneous mixture
(4) a homogeneous mixture
Gold can be flattened into an extremely thin sheet. The malleability of gold is due to the
(1) radioactive decay mode of the isotope Au-198
(2) proton-to-neutron ratio in an atom of gold
(3) nature of the bonds between gold atoms
(4) reactivity of gold atoms
The object is a satellite
Sun
The regions surrounding
the object are free from
debris
The object is triangular
in shape.
Planet
Not a Planet
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Answer:
Planet: The object orbits the sun
Not planet: The object is a satellite
Planet: The regions surrounding the object are free from debris
Not Planet: The object is triangular in shape.
Explanation:
A planet is characterized as:
Spheroidal (or at least big enough to be round-ish)
It should orbit the sun (not other planets, so satellites like the moon is not considered as a planet)
It should have no debris, or cleared of debris around its orbit
Although there is now the dwarf planet category, it satisfies almost all charateristics to be considered a planet, except the cleared of debris part.
Answer:
Planet: The object orbits the sun
Not planet: The object is a satellite
Planet: The regions surrounding the object are free from debris
Not Planet: The object is triangular in shape.
Explanation:
In gases, the molecules are held together by weak Vander waal forces. Due to this they have more kinetic energy and hence, more number of collisions take place between the molecules of a gas.
Therefore, they tend to diffuse at a faster rate and distance traveled by them is more as compared to the distance traveled by the molecules of a liquid.
On the other hand in liquids, the molecules are held by more strong intermolecular forces of attraction as compared to gases but not strong enough as they are in solids. Due to this molecules of a liquid are able to slide past each other. Hence, they have medium kinetic energy.
Therefore, less number of collisions take place between molecules of a liquid as compared to gases.
Thus, we can conclude that particles collide in gas so, substance X is a gas.
a weather buoy
a ship
a satellite