Answer the following question given this paragraph: In this reaction, and are positively-charged cations, while and are negatively-charged anions. Double-replacement reactions generally occur between substances in aqueous solution. In order for a reaction to occur, one of the products is usually a solid precipitate, a gas, or a molecular compound such as water. Q: Double-replacement reactions generally occur between substances in what kind of solution? Choices: - solid - reactive - saline - aqueous A:
aqueous

Answer the following question given this paragraph: A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. The salt water described above is homogeneous because the dissolved salt is evenly distributed throughout the entire salt water sample. Often it is easy to confuse a homogeneous mixture with a pure substance because they are both uniform. The difference is that the composition of the substance is always the same. The amount of salt in the salt water can vary from one sample to another. All solutions would be considered homogeneous because the dissolved material is present in the same amount throughout the solution. Q: What is the most important characteristic of a homogeneous mixture? Choices: - very reactive - high density - nonreactive - uniform composition throughout A:
uniform composition throughout

Answer the following question given this paragraph: Terrestrial biomes include the tropical rainforest, chaparral, and taiga. Q: Tropical rainforest, chaparral, and taiga are what kind of biomes? Choices: - endangered - arboreal - freshwater - terrestrial A:
terrestrial