Atoms and Bonding Flashcards

1

Uranium-235 and Uranium-237 are

nonmetals
isotopes
metalloids
<p>ions</p>

2

The atomic number is

the number of protons
the number of neutrons
the number of nuclei
the number of electrons

3

The subatomic particle with the least mass is the

electron
nucleus
proton
neutron

4

The columns of a periodic table are known as

groups or families
periods or groups
series or families
series or periods

5

In covalent bonding, electrons are

transferred
shared
positive
equal

6

the mass number of an atom is the number of

neutrons plus electrons
protons plus electrons
protons
protons plus neutrons

7

Except for Helium, an atom with a stable configuration has

More protons than neutrons
8 valence electrons
the same number of protons and electrons
2 valence electrons

8

The electons in the outermost energy level of an atom are called

free electrons
valence electrons
isotope electrons
ion electrons

9

ionic bonding is always between

nonmetals
metals and nonmetals
metals
metalloids

10

The model of an electron which is not exactly right, but convenient to draw and study is

the Heisenberg model
the Bohr model
the electron cloud model
the plum pudding model

11

covalent bonding is always between

metals and nonmetals
metals and metalloids
metals
nonmetals

12

An element is defined by

the number of electrons
the number of protons
the number of neutrons
the mass number

13

An anion is a (an)

positve ion
isotope
electron
negative ion

14

An atom which is more active than potassium is

Aluminum
Calcium
Lithium
Cesium

15

In ionic bonding, electrons are

equal
positive
transferred
shared

16

In the modern model of the atom, electrons are located in

in the nucleus
in fixed orbits, like planets
in the innermost energy level
in the electron cloud

Atoms and Bonding

Questions 16

Atoms and Bonding

Questions 16