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Chapter 2.1 review Flashcards | StudBud
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Chapter 2.1 review
Chapter 2.1 review
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This is a Quiz about Prentice Hall Biology Chapter 2.1 plus Science basics.
Flashcards
39 cards
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Practice quiz
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Questions
39
Answers
1
It's an element that you actually breathe
Dust
Air
Oxygen
Carbon
2
According to the next Periodic Table tile, what is the Atomic Mass of Magnesium?
Mg
24.31
1
12
3
The statement "The worm is 2 centimeters long" is a(n)
inference
hypothesis
observation
theory
4
The nucleus is made up of
protons and neutrons
protons, neutrons, and electrons
electrons and neutrons
protons and electrons
5
One isotope of carbon differs from another in which way?
atomic number
number of electrons
number of protons
number of neutrons
6
What type of ion forms when an atom loses electrons
neutral
negative
positive or negative
positive
7
What are atoms composed of?
Ions and isotopes.
Protons, electrons, and neutrons.
Protons and isotopes.
Ions, electrons, and neutrons.
8
How are the atomic number and the number of protons related to each other?
They are the same
They aren't related
They are opposites
Their sum equals the mass number
9
What do we call the slight attraction between molecules due to uneven electron sharing?
ionic forces
van der waals forces
strong forces
electromagnetic forces
10
If an atom contains 3 protons, 4 neutrons, and 3 electrons, its mass number is
11
4
3
7
11
The positively charged particle in an atom is called the
Neutron
Ion
Proton
Electron
12
What does the number after Carbon-12 represent?
the number of neutrons
the number of electrons
The atomic number
the mass of that atom
13
Carbon has an atomic number of 6. What does this mean?
It has 6 electrons
It means nothing
It has six neutrons
It has 6 protons
14
What is an ion?
Two or more atoms of the same element with different mass.
An atom with more neutrons than protons.
Two or more different atoms with the same amount of neutrons
An atom with charge.
15
How does an atom become an ion?
Loses or gains an electron
Loses an electron
It can't
Gains an electron
16
NaCl (salt) is a compound, how many elements does that compound includes?
4
1
3
2
17
Which of the following statements about a controlled experiment is true?
All things can be studied by a controlled experiment
All the variables must be kept the same
Controlled experiments can't be performed on living things
Only one variable is tested at a time
18
A covalent bond is formed as the result of
transferring protons
sharing a proton pair
transferring electrons
sharing an electron pair.
19
If an atom contains 11 protons and 12 neutrons, its atomic number is
11
12
1
There's no way to tell
20
Valence electrons determine an atoms _________?
electrical charge
mass
physical properties
chemical properties
21
the smallest particle of an element that maintains the chemical identity of that element
Compound
Element
Molecule
Atom
22
Which subatomic particle controls the identity of the atom?
Neutron
Electron
Nucleus
Proton
23
The space surrounding the nucleus of an atom contains
Ions
Neutrons
Electrons
Protons
24
Which of the following is
NOT
true
Neutrons have a negative charge.
Protons have a positive charge.
Neutrons have no charge.
A nucleus has a positive charge.
25
Numbers obtained by counting or measuring are considered ______________ data
quantatative
qualitative
accurate
useful
26
How do the number of protons, number of neutrons, and the mass number relate to each other?
Number of protons*number of neutrons= mass numbe
Number of protons + number of neutrons= mass number
Number of protons - number of neutrons= mass numbe
Number of protons/number of neutrons= mass numbe
27
Is the place where known elements are predicted and organized
Miss Cobb's head
Nova Elements
Science Book
Periodic Table of elements
28
What determines the identity of an atom?
How many electrons it has
Its mass number
How many protons it has
How many neutrons it has
29
If an atom gains one electron, what is its resulting charge?
-1
1
2
0
30
In an experiment, which variable is deliberately changed?
all of them
dependent
independent
control
31
An atom has an atomic mass of 51. Its atomic number is 26. How many neutrons does it have?
25
51
26
over 9000
32
A substance that consists of two or more different elements
Molecule
Atom
Element
Compound
33
What is an isotope?
Two or more atoms of the same element with different mass.
An atom with charge.
Two or more atoms with the same amount of neutrons.
An atom with more electrons than protons.
34
How many electrons can be found in an orbital (shell)?
none
2
4
it varies
35
Sodium's (Na) atomic number is 11. How many electrons are in its valence shell?
11
8
1
2
36
Different isotopes have different...
atomic numbers
# of electrons
# of Neutrons
# of protons
37
How many protons does Magnesium has?
24.31
8
1
12
38
What atom is this?
Vanadium
Sodium
Magnesium
Oxygen
39
According to the next Periodic Table tile, what is the atomic number of Magnesium?
Mg
12
1
24.31
