stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Atomic Structure Flashcards | StudBud
Explore
/
Atomic Structure
Atomic Structure
17 terms
·
StudBud Administration
·
246 plays
Structure of an atom
Flashcards
17 cards
F
Practice quiz
P
Host live
L
Questions
17
Answers
1
A positively charged subatomic particle:
Electron
Proton
Nucleus
Neutron
2
Who coined the word “atomos” when describing particles that were indivisible?
Democritus
Mrs Sohail
Dalton
Aristotle
3
Atomic mass is the
mass of protons and neutrons.
Relative atomic mass of the abundant isotopes.
mass of electrons and protons
mass number of an element.
4
(Gold Foil experiment)Rutherford concluded that his positively charged particles bounced back;
By densely packed regions of positive charge.
By densely packed electrons
By densely packed regions of negative charge.
By neutrons
5
Chemical symbol for an atom with 40 protons is___
Rb
Zn
Zr
Cd
6
Which conclusion was a direct result of the gold foil experiment?
An electron is located inside the nucleus.
An atom is composed of three types of subatomic particles
An atom is mostly empty space,has positively charged nucleus
An electron has properties of both waves and particles.
7
Carbon- 13 and Carbon- 14 are
Different elements
Isotopes
neutrons
Compounds
8
Isotopes are atoms of the same element that have different numbers of _____ in their nucleus.
Protons
Neutrons
Electrons
Quarks
9
Positive ion is known as
Anion
Cation
protons
electrons
10
What are the 2 different types of ions?
Neutrons, electrons
Cations, anions
Polyatomic ions, compounds
Neutrons, protons
11
Erica was told by her science teacher that ‘amu’ stands for:
Astronomical mass unit
Atomic measurement unit
Atomic mass unit
Astronomical measurement unit
12
Au+ ( atomic number 79) contains ___ electrons and --- protons
78 electrons, 78 protons
80 electrons, 80 protons
79 electrons, 79 protons
78 electrons, 79 protons
13
The number of protons in the nucleus of an element.
Atomic mass
Mass number
Average atomic mass
Atomic number
14
What does the atomic number of an atom represent:
Electrons and shells
Electrons
Neutrons
Protons
15
What is the atomic number and mass number of an atom with 11 protons and 12 neutrons?
atomic number = 23 , mass number = 12.
atomic number = 11 ,mass number = 12.
atomic number = 11, mass number = 23.
atomic number = 12 , mass number = 11.
16
According to Dalton's Atomic Theory:
Atoms can be divided
They can not be combined
atoms of given elements are identical
Atoms are destroyed in a chemical reaction
17
An electrically neutral atom of Rb ( Atomic number 37) contains:
37 protons, 37 neutrons
37 protons, 36 electrons
37 protons, 37 electrons
37 neutrons, 37 electrons
