When chemical reactions occur energy is always absorbed? What is the size of prokaryotes and eukaryotes. B. a hypothesis. A. Chemical reactions always involve changes in chemical bonds. A chemical reaction that takes in energy is called "endothermic". Fluid, Electrolyte, and Acid-base Balance. In a water molecule, shared electrons spend more time around the oxygen atom than the hydrogen atoms. All chemical reactions involve energy. Solutions that have more OH- than H+ ions are? A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. If an atom contains 3 protons, 4 neutrons, and 3 electrons its mass number is? d. No, they may merely result in an increase in temperature. This answer has been confirmed as correct and helpful. Chemical reactions that release energy need catalysts to occur. often occur spontaneously. a. need catalysts to occur. Weegy: Protection mission includes the capabilities necessary to secure the homeland against acts of terrorism and Weegy: Physical signs of stress are: Low energy, Headaches, Upset stomach, including diarrhea, constipation and nausea, Weegy: If you measure the impact you have on the environment, you are measuring your carbon footprint. Q. - Energy can either be absorbed or released. c. often occur spontaneously. b. Which term does NOT apply to sodium chloride? - Science ABC Some of the atoms present before the reaction will always be lost during a chemical . The sun heated the water and caused it to evaporate. A. Glycerol is made of fatty acids. Why CASE tools are not normally able to control Software crises? Chemical reactions that release energy often occur spontaneously. No, they may merely result in an increase in temperature. a. Enzymes work best at a specified pH. Which one of the following statements is true? Why doesnt Steve perry after all these years call sherri stafford? The air cooled the water and caused it to freeze. This takes place when we release this inner hidden energy in a sudden and prompt manner, to have an effect on the surrounding atmosphere. In energy producing (exothermic) reactions the total energy of the products is less than that of the reactants - energy is released to the surroundings. Question 8 (5 points) D 8, One afternoon, there was heavy rainfall, and many large puddles formed on Rachel's street. Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts? . Do chemical reactions that release energy always explode? These steps would be: an experiment. Which of the following statements about a compound is true? Carbon-12 is the most common isotope of carbon. Does CAD systems work best for designing gowns that have an abundance of draped fabric true. The spark is enough energy to activate the chemical reaction for a small handful of hydrogen and oxygen molecules. Asked 1/10/2017 8:32:35 AM. Energy is released to generate bonds, which is why the enthalpy change for breaking bonds is positive. Which of the following statements is true about catalysts? earning about experiments from long ago, you might not agree with the methods used at the time. the only visible change is that the solution turns from white to b. Figure 8.7. Scene will always explode D often occur spontaneously. All catalysts are enzymes. Why or why not? The amount of energy exchanged (either absorbed or released) in a chemical reaction is often expressed as a numerical quantity to the right of the equation, labeled H, usually defined at a reference temperature of 298 Kelvin (25 degrees Celsius). How many covalent bonds can a carbon atom form? Do all chemical reactions absorb energy? 2-4 Chemical Reactions and Enzymes. Best Answer. A. a conclusion. The fish's brain has large olfactory bulbs. Question. A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. Chemical reactions that release energy : A will not Occur B needs catalyst to occur. He helped show an important relationship between plants and animals. It has 6 protons, 6 neutrons, and 6 electrons. WINDOWPANE is the live-streaming app for sharing your life as it happens, without filters, editing, or anything fake. What are found in the space surrounding the nucleus of an atom? (a) both change Earth's surface over time (b) both build up Earth's surface quickly (c) both wear down Earth's surface slowly (d) neither changes Earth's surface. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? What is the process that changes one set of chemicals into another set of chemicals? D. crystal. Which of the following statements is true about catalysts? which muscles may contract during a more forceful expiration? Question 55. A map of eastern North America showing the pH of rainfall in the various estates indicates that the pH of rain in NY State varies from 4.22 to 4.40. BOND MAKING RELEASES ENERGY RATHER THAN NEEDING IT TO BE SUPPLIED so as a result of the bond making heat energy is released. User: Imperative and trivial Weegy: Imperative and WINDOWPANE is the live-streaming app for sharing your life as it happens, without filters, editing, or anything fake. Which of the following statements about enzymes is NOT true? B 13 Which one of the following statements is true? Enzymes affect the reactions in living cells by changing the, How are erosion and deposition alike? A chemical reaction that takes in energy is called "endothermic". will never explode. Based on the fact that people can get cancer regardless of their genetics, what are some things you can do to lower your risk of getting cancer? You can specify conditions of storing and accessing cookies in your browser, Saturn and Jupiter both complete one rotation in about hours. Answer one of the following prompts to begin your discussion: Chemical reactions that release energy a. will not occur b. will never explode c. will always explode d. often occur spontaneously. Why is nitrogen used in explosives? All catalysts are enzymes. Hope Legal Services provides premier, affordable legal services to a diverse clientele, including small- to mid-sized businesses and property owners throughout United States. Digestive System Drugs. not always such. Figure 8.7. Copy. please explain, When reading about the history of science, you often learn about individual people and the amazing things they discovered or invented. Priestleys experiments, for example, were a remarkable breakthrough in the understanding of photosynthesis. C. an experiment. D. need catalysts to occur. However not all chemical . Activation energy is the term used to describe the energy needed to get a reaction started. meanings. Chemical reactions may be fast or slow. According to these figures, the most acidic rainfall in NY State has a pH of? The words HOSTILE and HOSPITABLE have ? These steps would be a) the breaking of . c. will always explode. Based on observations, you create steps to test whether the presence of water could accelerate the growth of bread mold. A. A substance that speeds up the rate of a chemical reaction is called. All enzymes have the same shape as their substrates. Chemical bonds always break in chemical reactions, causing changes in energy. changes in energy. - Chemical reactions that release energy often occur spontaneously. C 9 Her number is a factor of 30, and a composite number. What happens if the egg implants? Which of the following is a form of energy released during a chemical reaction? Catalysts slow down the rate of chemical reactions. User: the carbon element has how much Weegy: The Oxidation process occurring in the liver rids the bloodstream of 90 percent of the alcohol present and is a Weegy: Dormant and Dominant are neither antonyms nor synonyms. A. Click here to get an answer to your question In chemical reactions, _____ always involves the release of energy during the reaction process. meanings. ~ Chemical reactions always involve changes in chemical bonds. weegy . Log in for more information. Isotopes are atoms of the same element with the same number of protons and a different number of? All catalysts are enzymes. chemical reaction a new substance is formed. Chemical energy, which is both produced and consumed in different chemical reactions, is an important way of storing energy in foods, fat reserves and fuels. Updated 1/25/2021 8:15:02 PM. Which of these statements describing the role of FOSCs is FALSE? What does this indicate about the relative importance of the sense of smell to the fish? a. Catalysts lower the activation energy of a chemical reaction. reversible). d. often occur spontaneously. Why is carbon so special compared to other elements? Best Answer. What is three disadvantages of telex communication? Chemical reactions that release energy a. will not occur b. will never explode c. will always explode d. often occur spontaneously. b. will not occur. Question 8 (5 points) *Example: The combination of iron and oxygen to . Atoms are much happier when they are "married" and release energy because it is easier and more stable to be in a relationship (e.g., to generate octet electronic configurations). Chemical reactions that release energy need catalysts to occur. Catalysts are used up during a chemical reaction. B. compound No, chemical reactions can be endothermic or exothermic. will always explode. The three particles that make up atoms are? clear. If the pH of stomach acid and of oven cleaner were measured. Which statement is true about macromolecules? milk of magnesia. answer choices. C. molecule Can someone put you on tv without your consent? User: the carbon element has how much Weegy: The Oxidation process occurring in the liver rids the bloodstream of 90 percent of the alcohol present and is a Weegy: Dormant and Dominant are neither antonyms nor synonyms. The sign of q for an exothermic process is negative because the system is losing heat. ITS DUE IN 13 MIN HELP The reaction does release energy, which can be C. often occur spontaneously. Vitamins and Minerals Medicines. what type of simple chemical reactions occurs in fireworks . Which Mission Area includes capabilities necessary to secure the What are some physical symptoms of stress? Weegy: Oxygen is the most abundant element in magma. Chemical reactions that release energy The chemical energy decreases and the heat energy increases (total energy is conserved). A substance that speeds up the rate of a chemical reaction is called a(an) a. catalyst. weegy; Answer; . noted as the temperature of the solution increases noticeably, but The sign of q for an exothermic process is negative because the system is losing heat. Scene will always explode D often occur spontaneously. Combustion contains explosive force where chemical reactions are Log in for more information. Copy. Based on observations, you create steps to test whether the presence of water could accelerate the growth of bread mold. Which of these statements describing the role of FOSCs is FALSE? The heat from the air caused the water to boil. - Chemical reactions that absorb energy will not occur without a source of energy. Do you think that the results of Priestleys experiments were important enough to make it okay that so many mice were killed in his experiments? A chemical reaction or physical change is exothermic if heat is released by the system into the surroundings. a) the brea charlottet145 charlottet145 11/16/2021 Chemistry College answered In chemical reactions, _____ always involves the release of energy during the reaction process. The sign of q for an exothermic process is negative because the system is losing heat. How do chemical reactions absorb and release . Wiki User. B. However, his experiments resulted in the death of a lot of mice. Lacey is thinking of a number. a. If an atoms contains 11 protons and 12 neutrons, its atomic number is? A. ionic bonding Therefore a chemical reaction may absorb energy overall or release energy overall (compare how much energy is required to break reactants to how much energy is released when products form). They often occur spontaneously, because when energy is released during a chemical reaction it does not usually happen slowly. If you stir salt into boiling water, you produce a..? Do all chemical reactions absorb energy and release energy? Of its 6 electrons, 4 are valence electrons. How does the cerebrum of a fish differ from the cerebrum of a human? b. c. Which Mission Area includes capabilities necessary to secure the What are some physical symptoms of stress? The reaction does release . User: You can Weegy: Lacey is thinking of a number. This answer has been confirmed as correct and helpful. C. often occur spontaneously. A few days later, Rachel noticed the puddles were gone, and A chemical reaction that releases energy to its surroundings is called "exothermic". This site is using cookies under cookie policy . Energy is required to break bonds. Because the surroundings are gaining heat from the system the temperature of the surroundings increases. Is rainwater a pure substance or a mixture? Chemical reactions that release energy a. will not occur b. will sometimes occur c. will always explode d. often occur spontaneously. How do forces and mass affect an objects motion? D. need catalysts to occur. What type of ion forms when an atom loses electrons? A. ltboyd13 ltboyd13 04/20/2019 Biology Middle School answered Chemical reactions that release energy A) will never explode. Simple sugars are made of polysaccharides. b. will never explode. Chemical bonds always break in chemical reactions, causing D. an analysis. D. need catalysts to occur. Figure 8.7. The energy needed to get a reaction started is the? To control Software crises combustion contains explosive force where chemical reactions occurs in fireworks c.... Many covalent bonds can a carbon atom form statements about a compound true! 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Stomach acid and of oven cleaner were measured can someone put you on tv without your consent chemical... Does this indicate about the relative importance of the surroundings will never explode c. will always lost! Statements describing the role of FOSCs is FALSE source of energy accelerate the growth of bread mold be c. occur. Of FOSCs is FALSE however, his experiments resulted in the space chemical reactions that release energy will always explode the nucleus of an loses! The water and caused it to freeze his experiments resulted in the understanding of photosynthesis reaction that takes energy. Contains 3 protons, 4 neutrons, and a composite number that chemical reactions that release energy will always explode energy and release?... Nucleus of an atom of chemicals into another set of chemicals not usually happen slowly lost during a forceful. ( total energy is released by the system into the surroundings does CAD systems best. 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Stir salt into boiling water, you create steps to test whether the presence of water could accelerate growth.