1.If humans evolved from chimpanzees, why are chimpanzees still around?
The conditions the chimps humans evolved from were different from the normal conditions chimps were used to. It's like moving an animal from one lush island to an island with harsher conditions and the animal in the harsh conditions will evolve and adapt while the animals on the lush island remain the same.
2.The Big Bang Theory proposes that everything in the Universe started from something called singularity which is smaller than an atom. How can you stuff everything in the universe in that? It's hard enough to stuff four suitcases in the trunk of your car!
That is just one of many theories and it hasn't been proven yet (hence it being called the big bang THEORY). No one really knows how the universe began.
3. If the earth really revolves around the sun, then why when we look at the sun we can see it plainly revolving around the earth? (And if the earth was moving around the sun, wouldn't we all fly off into space?)
Because we can't see the earth move since we are moving with the earth. It's walking in a circle around a box - the box looks like it's spinning, but it's really staying in place. We don't fly off into space because gravity keeps us on earth. The earth doesn't fly off into space because the earth is moving forward but the sun pulls on it a little bit so the forward direction curves, hence the circular-ish rotation around the sun.
4. If women were not created from Adam's rib, why is it that men have one fewer rib than women?
That's a genetic thing, not an atheist thing.
5.How do scientists know stars are "millions of light years away"? Have they been there and back? Do they have a tape measure that stretchs that long?
Have you ever been to a star? Have you been into space and realized they are not as close as the sun? The earth is about 150 million km away and you think the other stars are closer? If they were closer, we would see them during the day.
6.Scientists say all our genetic information is coded on DNA. But DNA is an acid! How can you write information in acid? You can write information on a hard drive, but not a liquid!
DNA is a nucleic acid, there is a difference. Maybe you should go back to school. The information on DNA is nothing like putting information on a hard drive. It is more like a code or recipe for the person.
7. People have been wearing clothes for thousands of years. Why haven't our bodies evolved natural clothes that come out of our skin then?
Why haven't we evolved to gain wings? Why haven't other animals evolved to human intelligence? Why haven't we evolved to shoot houses and food out of our butts? Because it is not necessary. Since clothes already exist to help us, we don't need to evolve to make them out of our skin. Plus, evolution takes millions of years (not thousands) for a change that big to occur.
8.If there really are millions and millions of species, then how could have Adam named them all? Obviously, there's not that many species then! (Gen 2:18-22)
That's because he didn't. As more species are discovered, the scientists who discover them name them. Go to google, type in animal species, and be amazed at the amount of wondrous creatures of this world.
9.If our brains are just a mishmash of biochemistry, how come chemicals like gasoline or bug spray can't think?
Because gasoline and bug spray are not the right combinations of chemicals. And if you take our brains out of our bodies, they don't function. Our brains need the rest of our body and organs to think and function.
Einstein said that if you approach the speed of light, time slows down. Once you hit the speed of light, time stops. If that is so, how come light can travel from point A to point B if time is stopped for light?
Light travels so fast, the world around it moves slow. Think being able to live your life out in the time it takes another person to tie their shoe. Einstein is referring to time seemingly stopping for everything that's not moving at the speed of light from the perspective of something moving at the speed of light.