An observer on the surface of Venus during the daytime would see a thick layer of clouds covering the entire sky. These clouds are composed of sulfuric acid and reflect most of the sunlight that reaches Venus back into space, creating a bright and hazy atmosphere. The observer would not be able to see the Sun or any other celestial objects due to the dense cloud cover.
I am not sure what exactly you mean with "planetary objects". To see planets, just look up in the evening, and watch out for objects that look like exceptionally bright stars. These days (October 2010), after sunset you can see Venus as a very bright star in the west, and Jupiter as a bright star (less bright than Venus, but otherwise exceptionally bright) in the east.
Not if you were on the surface of Venus. Venus has a very dense atmosphere which would mean you wouldn't see any planets or stars. You might just be able to make out the shape of the Sun but not very well.
No. The surface of Venus is obscured by thick clouds. If you could fly above the clouds then you would see the same stars that you see from Earth.
Yes. Venus orbits the sun.
They are heavier on Venus due to it's larger mass.
Never.
Yes. Venus is one of the brightest objects in the night sky, second only to the moon, and can easily be seen without a telescope. Using a telescope will not reveal much detail, as the surface of Venus is masked by dense clouds.
Jupiter is more massive then Venus, so Jupiter has more gravity. (the more massive a planet is, the more gravitational force it has on other objects)
Venus has a slightly weaker gravity than Earth. The acceleration due to gravity on Venus is about 90% of the gravity on Earth. It means that objects would weigh slightly less on Venus compared to Earth.
There isn't anything to see on Venus. You couldn't possibly survive at the surface anyway. Actually, a sight to see on Venus is a mountain range called Maxwell Montes, which is the highest mountain range on Venus (and it is about 2 km more than the elevation of Mount Everest above sea level on Earth). Another sight to see on Venus would be: Crater Mead, which is the largest crater on Venus.
yes you can see Jupiter from venus