Atomic Structure TEK 8.5A

QuizÂ by Tomekka Williams

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12 questions
• Q1
Made up of protons and neutrons; Center of an atom
Nucleus
30s
• Q2
positively charged subatomic particle; located in the nucleus; mass of 1 a.m.u
Proton
30s
• Q3
negatively charged subatomic particle; located in the electron cloud; mass of basically nothing
Electron
30s
• Q4
neutrally charged subatomic particle; located in the nucleus; mass of 1 a.m.u.
Neutron
30s
• Q5
The sum of protons and neutrons in an atom's nucleus
Mass Number
30s
• Q6
protons, neutrons, and electrons
Subatomic Particles
30s
• Q7
What type of particles are found in the cloud surrounding the atom's nucleus?
Negatively charged particles only
Positively and negatively charged particles
Neutral particles only
Neutrally and negatively charged particles
30s
• Q8
What is the mass number of potassium (K) that has 20 neutrons?
19
20
39
18
30s
• Q9
An atoms has 25 protons, 30 neutrons and 25 electrons, What is the charge of the atoms nucleus?
-30
-25
+30
+25
30s
• Q10
Which statement correctly describes the location and charge of the protons in an atom?
The protons are outside the nucleus and have no charge
The protons are inside the nucleus and have no charge
The protons are inside the nucleus and have a negative charge
The protons are inside the nucleus and have a positive charge
45s
• Q11
An atom of a certain element has 36 protons, 36 electrons and a mass number of 84, at room temperature this element is a very stable gas. How many neutrons are in this atom?
36
48
72
42
60s
• Q12
How many protons, electrons, and neutrons are present in an atom of Hafnium (Hf) , with a mass number of 78?
106 protons, 72 neutrons, 106 electrons
72 protons, 178 neutrons, 106 electrons
72 protons, 106 neutrons, 72 electrons
178 protons, 250 neutrons, 72 electrons
60s

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