WorksheetsExit Ticket TEKS 8.5A and 8.5B
Total questions: 6
Worksheet time: 15mins
A Student drew atomic models of four atomic models. Based on the drawings, which one is the least reactive?
Chlorine, because it has three energy levels with seven electrons in the third level
Gallium, because it has four energy levels with three electrons in the fourth level
Neon, because it has two energy levels with eight electrons in the second level
Tin, because it has five energy levels with four electrons in the fifth level
An atom of which element is represented by this model?
Carbon (C)
Neon (Ne)
Sodium (Na)
Boron (B)
An atom consists of 12 protons, 12 electrons, and 12 neutrons. Which of the following can be used to identify the element?
Neutrons
Electrons
Atomic number
Atomic mass
An atom has 11 protons, 12 neutrons, and 11 electrons. What is the identity of the element?
Sodium
Titanium
Vanadium
Magnesium
The element Barium (Ba) is made of particles with different atomic charges. Barium has how many neutrons located in it?
80 Neutrons
81 Neutrons
137 Neutrons
56 Neutrons
How do electrons of an element determine that element's reactivity?
If the valence shell has missing electrons it is very reactive to attract or lose more electrons.
If the valence shell has a full ring of electrons it is very reactive because it needs more.
If the valence shell has a full shell of electrons it is very reactive because it is already full.
If the valence shell has missing electrons it is not reactive because it is missing electrons.
