Q: Answer the following question given this paragraph: The name of this molecule is 2-methylpropane. The molecular formula is still C 4 H 10 , which is the same formula as butane. A structural isomer is one of multiple molecules that have the same molecular formula, but different structural formulas. Butane and 2-methylpropane are structural isomers. Q: The molecular formula is still c 4 h 10 , which is the same formula as? A:

OPTIONS:
- chlorine
- carbon hydroxide
- propane
- butane

A: butane

input: OPTIONS:
- circulatory system
- digestive system
- respiratory system
- excretory system Now, answer this question: Answer the following question given this paragraph: Toxic waste must be disposed of properly or there can be serious consequences. Now, your waste should not be as colorful or toxic as shown here (if it is, get yourself to a doctor as soon as possible), but it still needs to be removed from you. And that is the role of the excretory system. The excretory system gets rid of waste and excess water. Q: What system of the body is responsible for ultimately ridding it of waste and excess water? A:
A:
output: excretory system

Answer the following question given this paragraph: An electromagnetic wave is a wave that consists of vibrating electric and magnetic fields. A familiar example will help you understand the fields that make up an electromagnetic wave. Think about a common bar magnet. It exerts magnetic force in an area surrounding it, called the magnetic field. You can see the magnetic field of a bar magnet in Figure below . Because of this force field, a magnet can exert force on objects without touching them. They just have to be in its magnetic field. An electric field is similar to a magnetic field (see Figure below ). An electric field is an area of electrical force surrounding a charged particle. Like a magnetic field, an electric field can exert force on objects over a distance without actually touching them. Q: A wave that consists of vibrating electric and magnetic fields is called what? A:

OPTIONS:
- mechanical wave
- thermal wave
- propagate wave
- electromagnetic wave

Answer: electromagnetic wave

Problem: OPTIONS:
- fusion
- amalgm
- compound
- alloy
Q: Answer the following question given this paragraph: Metals such as iron are useful for many purposes because of their unique properties. For example, they can conduct electricity and bend without breaking. However, pure metals may be less useful than mixtures of metals with other elements. For example, adding a little carbon to iron makes it much stronger. This mixture is called steel. Steel is so strong that it can hold up huge bridges, like the one pictured above. Steel is also used to make skyscrapers, cargo ships, cars, and trains. Steel is an example of an alloy. Q: Mixture of metals is called what? A:
Answer: alloy

Problem:OPTIONS:
- liquid sedimentary rocks
- plasma sedimentary rocks
- plants sedimentary rocks
- chemical sedimentary rocks

Answer the following question given this paragraph: Chemical sedimentary rocks form when crystals precipitate out from a liquid. The mineral halite, also called rock salt, forms this way. You can make halite! Leave a shallow dish of salt water out in the Sun. As the water evaporates, salt crystals form in the dish. There are other chemical sedimentary rocks, like gypsum. Q: What forms when crystals precipitate out from a liquid? A:
****
A: chemical sedimentary rocks

Problem:OPTIONS:
- nitrogen
- hydrogen
- oxygen
- carbon

Answer the following question given this paragraph: Since then, the distinction between organic and inorganic compounds and reactions has blurred. Currently, the field of organic chemistry studies the structure and reactivity of nearly all carbon-containing compounds. Over twenty million organic compounds are known, ranging from very simple molecules to complex proteins. Q: The field of organic chemistry studies the structure and reactivity of compounds containing what element? A:
****
A:
carbon