University:
High School
Course:
High School Chemistry
Academic year:

2019
Views:

291

Pages:

14
Author:

Axel Love

1. Which statement describes how an atom in the ground state becomes excited? The atom absorbs energy, and one or more electrons move to а higher electron shell. 2. The atom absorbs energy, and one or more electrons move to а lower electron shell. 3. The atom releases energy, and one or more electrons move to а higher electron shell. 4. The atom releases energy, and one or more electrons move to а lower electron shell. 2. Which element �th metallic and nonmetallic properties? 4. Sr 1. Rb 3. Rn � @ z_ � --2.-iл.� ) i Г)(( 3. ½L!щ:h atom has the greates� 2. 4. Na 4. �i 2" л, 13 з. s; l't 11 + · С tJ-а, OfY,1 An atom is electrically neutral because the (Dumber of protons equals the number of electrons 2. number of protons equals the number of neutrons 3. ratio of the number of neutrons to the number of electrons is 1: 1 4. ratio of the number of neutrons to the number of protons is 2:1 Е}' v-5\; 5. How do the energy and the most рrоЬаЫе location of an electron in the th1rd shell е, of an atom compare to the energy and the most probaЬle location of an electron �'л('/ _ the first shell of the same atom? IY 11 ·' 1. In the third shell, an electron has more energy and is closer to the 1:::: С nucl=. �n the third shell, an electron has more energy and is farther from the nucleus. 3. In the third shell, an electron has less energy and is closer to the nucleus. 4. In the third shell, an electron has less energy and is farther from the nucleus. О 6. Which two particles make up most of the mass of а hydrogen-2 atom? 1. electron and neutron 3. electron and proton 4. proton and positron proton and neutron Q) 7. An orЬital is defined as а region ofthe most рrоЬаЬ!е location of 0n electron 2. а nucleus 3. а neutron D ';\J Q_ for{\ с:; 8·· 8 _ 2 4. а proton о Which statement explains why neon is а Group 18 element? 1. Neon is а gas at SТР. 2. Neon has а low melting point. Neon atoms have а staЬle valence electron configuration. 4. Neon atoms have two electrons in the first shell. W 10. Which substance can Ье broken down Ьу chemical means? 3. manganese 2. mercury 1. magnesium М3 i-\3 V\'\(\ � 2Ц 8. �at is the electron configuration of а calcium ion (Са'2) in the ground state? .1) 2. 2-8-8-8 4. 2-8-8-2 3. 2-8-8-1 с:1- - В _ G .\l:Y8-8 9. l'r; I ОР'\