All atoms of the same element have the same

Number of Protons, Atomic Number

Fluorine has atomic number 9 and mass number 19. It has...

9 protons, 10 neutrons, 9 electrons

How many protons, neutrons, and electrons does this Titanium isotope have?

22 protons, 26 neutrons, 22 electrons

Dalton's atomic theory stated that atoms cannot be created or destroyed. This helped support

the law of conservation of mass

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Unit 2 Review Day 1

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Questions 14

Answers

1
Thomson used his "chocolate chip cookie" model to draw atoms and found this subatomic particle
chips
electrons
protons
neutrons
2
All atoms of the same element have the same
Number of Protons
Number of Neutrons
Mass Number
Atomic Number
3
What subatomic particle did James Chadwick discover?
Neutron
the atom
Electron
Proton
4
What two subatomic particles are always equal to each other in a neutral atom?
atomic number and neutrons
protons and electrons
neutrons and electrons
protons and neutrons
5
The majority of an atom's mass is found
in protons only
evenly spread throughout the atom
in electron orbitals
in the nucleus
6
What is the atomic number for Xenon?
131
131.293
54
77
7
If an atom gains electrons it becomes and is called a(an)
positive, anion
negative, cation
negative, anion
positive, cation
8
Fluorine has atomic number 9 and mass number 19. It has...
9 protons, 19 neutrons, 9 electrons
9 protons, 10 neutrons, 10 electrons
9 protons, 10 neutrons, 9 electrons
10 protons, 9 neutrons, 9 electrons
9
True or False: Atoms are mostly empty space.
False
True
10
How many protons, neutrons, and electrons does this Titanium isotope have?
22 protons, 26 neutrons, 22 electrons
22 protons, 48 neutrons, 22 electrons
26 protons, 22 neutrons, 26 electrons
22 protons, 26 neutrons, 26 electrons
11
Dalton's atomic theory stated that atoms cannot be created or destroyed. This helped support
the quantum model
the chocolate chip cookie model
Aristotle's theory
the law of conservation of mass
12
Isotopes of an element contain different numbers of
neutrons
nuclides
protons
electrons
13
An atom of Sodium (Na) has 11 protons and 12 neutrons. What is its mass number?
1
11
23
12
14
Neon-21 has 11 neutrons. It also contains
11 protons
10 protons
21 protons
11 electrons

Unit 2 Review Day 1 Flashcards | StudBud