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Biology 121 JCCC __ Exam 1 2025 Questions and Answers False statement about matter - ....ANSWER☑️☑️...-All mattere exists in the form of compounds Describe a compound - ....ANSWER☑️☑️...-Contains two or more different elements in a fixed ratio In the equation 2 H2 + O2 2 H2O - ....ANSWER☑️☑️...-only H2O is a compound False statement regarding chemical reactions - ....ANSWER☑️☑️...-Some chemical reactions create electrons; others destroy them In the equation 2 H2 + O2 2 H2O, the H2 molecules are ________ and the H2O molecules are ________. - ....ANSWER☑️☑️...-reactants . . . products Which particles are found in the nucleus of an atom? - ....ANSWER☑️☑️...-protons and neutrons What is the atomic weight (mass) of an atom that has 6 protons, 6 neutrons, and 6 electrons? - ....ANSWER☑️☑️...-About 12 An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many electrons does boron have? - ....ANSWER☑️☑️...-5 Describe the atomic number of an atom - ....ANSWER☑️☑️...-the number of protons in the atom FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1