Answer the following question given this paragraph: When studying the different states that matter exhibits, we have been looking at pure substances . Pure substances have a constant composition and can only be changed through chemical reactions. Constant composition indicates that a sample of a pure substance always contains the same elements in the same proportions. There are two main types of pure substances:. Q: Pure substances have a constant composition and can only be changed through what? Choices: - heating - dissolution - liquid reactions - chemical reactions A:
chemical reactions
Answer the following question given this paragraph: Mutations that occur in gametes can be passed on to offspring. An offspring that inherits a mutation in a gamete will have the mutation in all of its cells. Q: An offspring that inherits a mutation in a gamete will have the mutation in all of its? Choices: - seeds - proteins - eggs - cells A:
cells
Q: Answer the following question given this paragraph: When wood burns, it changes to ashes, carbon dioxide, water vapor, and other gases. You can see ashes in the wood fire pictured here. The gases are invisible. Q: What is the primary gas produced from burning of wood? Choices: - liquid dioxide - Hydrogen Dioxide - toxic dioxide - carbon dioxide A:
A: carbon dioxide
Question: Answer the following question given this paragraph: Neutrons consist of fundamental particles known as quarks and gluons. Gluons carry the strong nuclear force that binds together the quarks in a neutron. Q: The two main fundamental particles that make up neutrons are quarks and what else? Choices: - prions - leptons - atoms - gluons A:
Answer: gluons
*Question*
Answer the following question given this paragraph: Acids and bases have had many uses throughout history. In this chapter we want to explore the properties of acids and bases and the reactions in which they take part. Q: Acids are the opposites of what? Choices: - water - solids - gas - bases A:
**Answer**
bases
Answer the following question given this paragraph: The nitrogen atom of a primary amine is bonded to two hydrogen atoms and one carbon. The nitrogen atom of a secondary amine is bonded to one hydrogen and two carbons. The nitrogen atom of a tertiary amine is bonded to three carbon atoms. Amines are typically named by a common system rather than by IUPAC guidelines. The common system for naming amines along with several examples is shown below. Q: How many hydrogen atoms does a nitrogen atom of a primary amine have? Choices: - four - six - ten - two A:
two