Answer the following question given this paragraph: the law of conservation of matter, which says that matter cannot be created or destroyed. This means we must have the same number of protons and neutrons on both sides of the nuclear equation. If our uranium nucleus loses 2 protons, there are 90 protons remaining, identifying the element as thorium. Moreover, if we lose four nuclear particles of the original 235, there are 231 remaining. Thus we use subtraction to identify the isotope of the Th atomin this case,. Q: The law of conservation of matter, which says that matter cannot be created or this? Choices: - abandoned - damaged - stopped - destroyed A:
destroyed
------
Answer the following question given this paragraph: Viruses , like the one depicted in Figure below , are tiny particles that may cause disease. Human diseases caused by viruses include the common cold and flu. Do you think viruses are prokaryotes or eukaryotes? The answer may surprise you. Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. Q: The common cold and flu are examples of human diseases caused by what tiny particles? Choices: - infections - parasites - bacteria - viruses A:
viruses
------
Answer the following question given this paragraph: A coefficient is a small whole number placed in front of a formula in an equation in order to balance it. The 2 in front of the H 2 means that there are a total of atoms of hydrogen as reactants. Visually, the reaction looks like the Figure below . Q: What do you call a small whole number placed in front of a formula in an equation in order to balance it? Choices: - correlation - divisible - function - coefficient A:
coefficient
------
Answer the following question given this paragraph: Ecosystems require constant inputs of energy from sunlight or chemicals. Producers use energy and inorganic molecules to make food. Consumers take in food by eating producers or other living things. Decomposers break down dead organisms and other organic wastes and release inorganic molecules back to the environment. Q: What do decomposers release once they have broken down the dead organisms? Choices: - essential molecules - unusable molecules - organic molecules - inorganic molecules A:
inorganic molecules
------