Valance electrons - Study guides, Class notes & Summaries

Why do only the outer electrons leave their orbit shells?  Only outer electrons leave their orbit shells, because electrons furthest from the nuclear us are more easily freed from their orbits due to a weaker electrostatic force What is required to have a balanced atom?  The number of electrons must equal the number of protons to have a balanced atom List the capacity for each of the first for orbital shells of an atom  Shell 1=2 electrons, shell 2= 8 electrons, shell 3= 18 elect...

The chemistry & physics of molecules that make up living organisms - Molecular Biology Compounds that do not have a carbon backbone - Inorganic Compounds A substance that cannot be broken down into simpler substances by ordinary chemical reactions - Element Each element is given a ________________. - Chemical Symbol These four elements make up 96% of the mass of most organisms - Oxygen, Carbon, Hydrogen, Nitrogen The smallest portion of an element that retains its chemical properties - At...

ACS General Chemistry 1 studysheet Exam 124 Questions with Verified Answers 56=Mass # (A) 26= Atomic # (Z) Fe= symbol - CORRECT ANSWER 56= 26= Fe= Mass Number - CORRECT ANSWER Proton+ Neutrons Atomic Number - CORRECT ANSWER # of protons/electrons (equal in elemental form) - superscript - CORRECT ANSWER Add e- + superscript - CORRECT ANSWER subtract e- Isotope - CORRECT ANSWER Diff number of neutrons Isomer - CORRECT ANSWER two or more compounds with the same # of elemen...

NCATT AET Questions and Answers Already Passed Direct current is defined as the flow of electrons in one direction throughout a circuit with constant voltage and current Faraday's Law current will flow in a circuit provided there is electrical difference in potential and there is a path for it to flow Loads slow current by applying resistance Current flows from negative to positive Atoms represent the smallest elements that exist in nature Atoms are made up of protons, neutrons and electro...

CHEM120 Students: The first exam in your science course is approaching. The General Education Academic Support is here to help. What can you do ahead of Exam 1? 1. Attend a live exam review Thursday, May 12th 6 PM MT Exam 1 Review Join Meeting here: Click here to join 2. Watch the recording of an exam review Click here to watch recorded exam review 3. Schedule a 1:1 appointment with a tutor Click here to book 4. Review the topic videos from weeks 1 and 2 Click her to review ...

nonpolar covalent bond - ️️equal sharing of electrons properties of water - ️️high heat capacity, polar solvent, reactivity, cushioning atomic structure - ️️nucleus, electron shell ionic bond - ️️involve the transfer of one or more electrons from one atom to another; results in atoms being charged Matter - ️️Anything that takes up space and has mass elements - ️️substances that cannot be broken down by ordinary chemical means atoms - ️️smallest piece of an elem...

Matter - Answer-Anything that takes up space and has mass elements - Answer-substances that cannot be broken down by ordinary chemical means atoms - Answer-smallest piece of an element; smallest unit of matter major elements of the body - Answer-oxygen, carbon, hydrogen, nitrogen atomic structure - Answer-nucleus, electron shell atomic number - Answer-number of protons mass number - Answer-number of protons and neutrons isotope - Answer-atoms with different numbers of neutrons compound -...

physical property correct answers A physical property iscan be observed without changing the identity of the substance. mixture correct answers matter composed of two or more substances. exothermic process correct answers process is one in which energy, often in the form of heat, is produced. mass number correct answers the sum of the number of protons and neutrons in the nucleus of an atom. isotopes correct answers atoms of the same element with a different number of neutrons and th...

Ap biology exam 2020 Latest Update with Solutions how many elements are required for life - Answer -25 what elements make up 96% of living things? - Answer -C, H, O, N what elements make up the remaining 4% of living things? - Answer -P, S, Ca, K trace elements - Answer -required by an organism in only minute quantities what are examples of trace elements? - Answer -Fe: get it from things like spinach, meats, cereal I: get it from salt what are atoms? - Answer -smallest units of matter ...

The chemistry & physics of molecules that make up living organisms - Molecular Biology Compounds that do not have a carbon backbone - Inorganic Compounds A substance that cannot be broken down into simpler substances by ordinary chemical reactions - Element Each element is given a ________________. - Chemical Symbol These four elements make up 96% of the mass of most organisms - Oxygen, Carbon, Hydrogen, Nitrogen The smallest portion of an element that retains its chemical propert...