Simple chemistry questions and answers. Top Ten Chemistry Questions and Answers 2019-01-15

Unit Conversions Practice Problems

This is a rule outlined by the laws of physics. The answer you have given, imaginatively, in terms of Indian elephants, is, in fact, the weight of the atmosphere, which is an answer to a completely different question. Do we end up with miles? Where does sound travel faster; water or air? A helicopter, for example, appears to stand still in the air as its propeller pulls the aircraft up at the same rate gravity pulls it down. I'm glad I never had to field that one! The most reactive metals are the alkali metals - group I of the periodic table. Is the Sky Blue Because of the Ocean? Keep this in mind as you do calculations! Or it can be the entire vastness of space, which ends.

Unit Conversions Practice Problems

The reason we can see the moon and not stars during the day is because the sunlight reflected off of the the moon makes it 100,000 times brighter than the brightest star in the sky. Children crave parental attention, and this is a great opportunity for you to spend time together while learning something new. Each of these colours has a different wavelength. It wasn't; it made it's audiences sad, but the film itself was merely the projection of shades of colours designed to form images themselves designed to produce feelings of sadness in those viewing. Alloys are mixtures containing at least one metal.

100 Science Trivia Questions and Answers

While most of the time it is blue, sometimes it is not. What type of organism makes up the oldest known fossil? Convert your answer in problem 3. What units need to be in denominator bottom? If the bird sat on a wire and touched the metal of the pylon or another wire, it would also complete a circuit and get electrocuted. Who was the last president of the Soviet Union? So when white light from the sun enters the ocean, it is mostly the blue that gets returned. Saying that water is wet is like saying that the film Love Story was sad.

20 Questions Chemistry Quiz

Around 376 600 km away. But, because this is the metric system, we can modify that so that you don't have to keep a lot of zeros in your head. Blue light waves travel in short, choppy waves. Another reason to master chemistry is so you can do and understand cool science projects. I'm going to read this Hub to our 9 year old.

Chemistry Questions Answers MCQ

Mix nickel and titanium and you get Nitinol, a smart alloy used to make spectacle frames. This allows the match to catch. Is Obsidian an igneous, sedimentary or metamorphic rock? The ozone layer absorbs around 99% of this harmful radiation, and is not used up in the process, so why are there giant holes in this shield? A substance that causes fever. What is the Law of Conservation of Energy? Some great headscratchers answered here, including the all-time favourite: Which came first? Still, mathematicians got the number above by looking at the strength of Earth's gravitational pull on nearby objects. Armchair Chemist Boy 8-10 in Chemistry Lab. Waterproof matches have a thin coating of wax over the whole match.

Science Quizzes for Kids

Fast Fact: The first friction match was invented in 1826 by English chemist, John Walker. Please select one of the links below to start playing our quiz rounds. What we feel as wetness is actually coldness as the water evaporates. Fast Fact: Bee stings are acidic. When you snap the stick, the glass vial breaks and the two chemicals mix and react.

Practice Multiple Choice Questions

I really appreciate this Hub! The result is a white powder that looks similar to table salt. If you bend your glasses let's say, by sitting on them. You have just calculated how many inches you have to cover on the trail. The Reactivity Series is grouped based on whether the metal reacts with oxygen, water and acids. Try our free online sciences quizzes and see how many questions friends and team members can answer correctly. With all that weight, it's surprising we don't notice it as it presses on us evenly from all directions.

Chemistry Questions and Answers

True or false — there are 206 bones in an adult human body and 300 bones in an infants body? In the months before a spell of cold weather, birds also increase their fat intake. The same effect can be seen if you shine a light through a glass prism. Scaling problems Three maps showing three different scales. Dry water is an unusual form of powdered liquid. Remember, units cancel when one unit is in numerator and the other is in the denominator.