stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Unit 3 Intro to Chem 1 Flashcards | StudBud
Explore
/
Unit 3 Intro to Chem 1
Unit 3 Intro to Chem 1
21 terms
·
StudBud Administration
·
79 plays
#introtochem #chemistry
Flashcards
21 cards
F
Practice quiz
P
Host live
L
Questions
21
Answers
1
Which particles have approximately the same size and mass as each other?
none - they are all very different in size and mass
protons and neutrons
electrons and protons
neutrons and electrons
2
The bond between sulfur - E.N. value 2.5 and chlorine E.N. value 3.0 is:
ionic
not formed
non-polar covalent
polar covalent
3
How does chlorine form an ion?
Gains 1 e to form Cl- ion
Gains 1e to form Cl+ ion
Loses 1 e to form Cl+ ion
Loses 1 e to form Cl- ion
4
Changing the number of neutrons of an atom changes its:
ion
element
charge
isotope
5
How many dots would be used for the electron dot structure of carbon?
6
2
4
8
6
This compound is named:
2-methylpentane
3-methylpentane
methylpentane
4-methylpentane
7
When you change the number of electrons on an atom, you produce a different:
ion
element
atomic mass
isotope
8
In a non-polar covalent bond, the electrons in the bond are:
lost
gained
shared equally
shared unequally
9
Indicate the number of electrons lost or gained by calcium and give the charge of it's ion
Gains 2 e and forms Ca ion 2-
Loses 2 e and forms Ca ion 2-
Loses 2 e and forms Ca ion 2+
Gains 2 e and forms Ca ion 2+
10
The nucleus of an atom consists of:
protons and neutrons
protons, neutrons and electrons
electrons
neutrons
11
The three basic components of an atom are:
protium, deuterium, tritium
protons, neutrons, electrons
protons, neutrinos, electrons
protons, neutrons, ions
12
According to atomic theory, electrons are usually found:
outside the nucleus; an atom's volume is it's electron cloud
either in the nucleus or around it;
outside the nucleus; they're attracted to the protons
in the atomic nucleus
13
A single proton has what electric charge?
no charge
either a positive or negative charge
positive charge
negative charge
14
Organic Compounds are most likely to:
contain covalent bonds
have high melting points
not burn in air
are soluble in water
15
The formula for phosphorus trichloride is:
P3Cl
PCl
KCl
PCl3
16
An element is determined by the number of:
atoms
neutrons
protons
electrons
17
What is the formula of the ion that has 16 protons and 18 electrons?
S2-
S2+
Ar2-
Ar2+
18
Which two particles would be attracted to each other?
electrons and neutrons
protons and neutrons
electrons and protons
all particles are attracted to each other
19
CH
3
CH
2
CH
2
CH
2
CH
3
is named
hexane
pentane
propane
butane
20
What type of compound is N
2
O
4
and what is its name?
covalent, dinitrogen oxide
covalent, dinitrogen tetroxide
ionic, dinitrogen tetroxide
ionic, nitrogen oxide
21
The atomic number of an atom is equal to the number of:
electrons
protons
the number of protons plus the number of neutrons
neutrons
