stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Chemistry CH3 Review Flashcards | StudBud
Explore
/
Chemistry CH3 Review
Chemistry CH3 Review
37 terms
·
StudBud Administration
·
257 plays
A review of Chapter 3 concepts.
Flashcards
37 cards
F
Practice quiz
P
Host live
L
Questions
37
Answers
1
Which subatomic particle is positively charged?
proton
electron
nucleus
neutron
2
How many protons, electrons, and neutrons are there in an atom of chlorine-36?
17p, 17n, 36e
17p, 19n, 19e
36p, 36n, 36e
17p, 19n, 17e
3
Where are electrons found?
in the electron spiral
in the electron cloud
in the nucleus
in the protons
4
What is NOT found in the nucleus of an atom?
none of the above
neutron
electron
proton
5
How many mole are there in 9.03x10
25
atoms of calcium?
150 mol
1.84x10-50 mol
0.0067 mol
5.44x1049 mol
6
The atomic number
identifies the atom.
tells the number of neutrons.
tells the number of electrons.
tells the number of protons.
7
The mass number is
number of protons.
number of protons + electrons.
number of protons + neutrons.
number of neutrons + electrons.
8
6.022x10
23
Avocado's number.
Amount of particles in 1 mole.
Avogadro's number.
Amount of particles in 1 dozen.
9
Which subatomic particle is negatively charged?
neutron
proton
nucleus
electron
10
Which particle is approximately 1/2000 the size of a proton?
electron
nucleus
proton
neutron
11
Which of the following is NOT part of an atom?
proton
neutron
mitochondria
electron
12
Which part of Dalton's atomic theory is no longer correct, and has been modified?
In reactions, atoms are combined, separated, or rearranged.
Atoms cannot be subdivided, created, or destroyed.
Atoms combine in simple whole-number ratios.
All matter is composed of small particles called atoms.
13
What is the overall charge of an atom?
0
+1
-1
none of the above
14
Unit used to measure the amount of a substance.
second
cluckster
mole
meter
15
Weighted average of the atomic masses of the naturally occurring isotopes of an element.
Average atomic mass.
Atomic number.
Mass number.
Average mass number.
16
What is the charge of a proton?
-1
+1
none of the above
0
17
How many moles are in 42 grams of nitrogen?
0.33 mol
3 mole
588 mol
0.0017 mol
18
How many grams are in 4 moles of He?
4 g
0.25 g
1 g
16 g
19
What is the charge of a neutron?
+1
none of the above
-1
0
20
Where is most of the mass of an atom found?
nucleus
electron
neutron
proton
21
Molar mass is usually written in units of
mol
atoms
g
g/mol
22
The transformation of a substance or substances into one or more new substances is known as
a physical reaction.
a chemical reaction.
a nuclear transformation.
a chemical identity.
23
What is the center of an atom called.
nucleus
proton
electron
neutron
24
The mass of one mole of a pure substance.
Avogadro's mass.
Molar mass.
Atomic mass.
Gram mass.
25
What particle has a mass of essentially zero?
electron
neutron
none of the above
proton
26
Which subatomic particle has no charge?
electron
proton
nucleus
neutron
27
Which of the following has a mass of 1 amu?
protons only
neutrons only
protons and neutrons
electrons only
28
How many grams are in 1.2x10
26
atoms of oxygen?
3188 g
199.2 g
12.45 g
1.99x1048 g
29
The Law of Conservation of Mass states
mass is neither created nor destroyed.
mass can be created.
none of the above.
mass can be destroyed.
30
A chemical contains the same elements in the same proportions regardless of the size or source.
Law of Definite Proportions
Conservation of Mass
None of the above.
Law of Multiple Proportions.
31
What is the overall charge of the nucleus?
neutral
positive
none of the above
negative
32
Atoms of the same element that have different masses.
Isotopes
Twins
Cations
Anions
33
Who came up with the atomic theory?
Dalton
Newton
Mrs. Tracy
Mendeleev
34
How many atoms are in 2.5 mol of sulfur?
4.15x1022 atoms
1.51 atoms
1.51x1024 atoms
4.15 atoms
35
What is the charge of an electron?
-1
none of the above
+1
0
36
How many atoms in 64 grams of sulfur?
1.20x1024 atoms
1.06x10-22 atoms
3.85x1025 atoms
2 atoms
37
Different elements can combine in different whole number ratios to make different compounds.
Law of Definite Proportions
Conservation of Mass
Law of Multiple Proportions
None of the above.
