Question: Answer the following question given this paragraph: For each of the following situations, tell whether the rate of the reaction would increase or decrease, and explain your answer in terms of collision theory. The concentration of a reactant is doubled. Q: What is formed when atoms of different elements combine in a chemical reaction? Choices: - crystals - dust - toxins - compounds A:
Answer: compounds

Question: Answer the following question given this paragraph: Static electricity is a buildup of electric charges on objects. It occurs when electrons are transferred from one object to another. Q: What is the term for the buildup of electric charge on an object, which can be transferred to another when touched? Choices: - electromagnetic electricity - electric potential - static cling - static electricity A:
Answer: static electricity

Question: Answer the following question given this paragraph: Beta decay occurs when an unstable nucleus emits a beta particle and energy. A beta particle is an electron. It has a charge of -1. In nuclear equations, a beta particle is represented by the symbol . The subscript -1 represents the particle's charge, and the superscript 0 shows that the particle has virtually no mass. Nuclei contain only protons and neutrons, so how can a nucleus emit an electron? A neutron first breaks down into a proton and an electron (see Figure below ). Then the electron is emitted from the nucleus, while the proton stays inside the nucleus. The proton increases the atomic number by one, thus changing one element into another. Q: What occurs when an unstable nucleus emits a beta particle and energy? Choices: - nucleus decay - alpha decay - methane decay - beta decay A:
Answer:
beta decay