The Composition of Atoms Quick Check 1 of 51 of 5 Items Question What determines an atom’s identity?(1 point) Responses the valence number the valence number the number of electrons the number of electrons the number of protons the number of protons the number of neutrons

Answer 1

An atom's identity is determined by the number of protons it has in its nucleus. Therefore, the correct response is the number of protons.

Answer 2

The Composition of Atoms Quick Check 2 of 52 of 5 Items Question What can be stated for a particular element if only the group number of 14 is known?(1 point) Responses The element has 4 electrons. The element has 4 electrons. The element has 4 valence electrons. The element has 4 valence electrons. The element has 14 neutrons. The element has 14 neutrons. The element has 14 protons. The element has 14 protons.

Answer 3

If only the group number of 14 is known, it can be stated that the element has 4 valence electrons. This is because elements in group 14 of the periodic table (also known as group IV) typically have 4 valence electrons.

Answer 4

Why are the noble gases the least reactive elements?(1 point) Responses They are the last elements in each row on the periodic table. They are the last elements in each row on the periodic table. They have the same number of electrons as protons. They have the same number of electrons as protons. Their outer most energy levels are complete with 8 electrons. Their outer most energy levels are complete with 8 electrons. They are all radioactive.

Answer 5

The noble gases are the least reactive elements because their outermost energy levels are complete with 8 electrons. This complete electron configuration makes them stable and less likely to engage in chemical reactions.

Answer 6

Question According to the octet rule, if an atom has fewer than 8 electrons in the outer most energy level, what is likely to happen?(1 point) Responses It will release electrons and protons until it reaches a stable configuration. It will release electrons and protons until it reaches a stable configuration. It will gain or lose neutrons until it has an equivalent number of neutrons to protons. It will gain or lose neutrons until it has an equivalent number of neutrons to protons. It will react with other nearby atoms to give, receive or share electrons until it has a full outer shell. It will react with other nearby atoms to give, receive or share electrons until it has a full outer shell. Nothing will happen, unless it is radioactive. Nothing will happen, unless it is radioactive. Skip to navigation

Answer 7

According to the octet rule, if an atom has fewer than 8 electrons in its outermost energy level, it will react with other nearby atoms to give, receive, or share electrons until it has a full outer shell. This behavior helps the atom achieve a more stable electron configuration.

Answer 8

Question Use the simulation to answer the question. Build an Atom On the home screen, select “Atom.” Using as many electrons, neutrons, and protons and possible, what is the largest neutral atom you can build? (1 point) Responses magnesium (Mg) magnesium (Mg) neon (Ne) neon (Ne) sodium (Na) sodium (Na) fluorine (F) fluorine (F) Skip to navigation

Answer 9

Based on the context of your question, assuming you are referring to building an atom using the simulation, the largest neutral atom you could build among the provided options is magnesium (Mg). Magnesium has 12 protons and therefore is larger than neon (10 protons), sodium (11 protons), and fluorine (9 protons).

Answer 10

Constructing Segments Quick Check 1 of 51 of 5 Items Question Use the image to answer the question. Lucia constructed CD¯¯¯¯¯¯¯¯ as a copy of AB¯¯¯¯¯¯¯¯ using a straightedge and compass. What can Lucia say about AB and CD ? (1 point) Responses AB=14CD. m Modifying above upper A upper B with bar . AB=CD. m Modifying above upper A upper B with bar . AB=2CD. m Modifying above upper A upper B with bar . AB=12CD.

Answer 11

If Lucia constructed segment \( \overline{CD} \) as a copy of \( \overline{AB} \) using a straightedge and compass, she can say that \( AB = CD \). This means that the lengths of segments AB and CD are equal.