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Gen Bio Unit 1 Atoms, Ions, and Molecules Flashcards | StudBud
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Gen Bio Unit 1 Atoms, Ions, and Molecules
Gen Bio Unit 1 Atoms, Ions, and Molecules
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Biology Quiz on basics of Chemistry (Section 2.1)
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Questions
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Answers
1
What distinguishes one element from another?
The number of electrons.
The number of neutrons.
The shape.
The number of protons.
2
Which of the following cannot be broken down by ordinary chemical means?
bond
element
compound
molecule
3
How do ions form?
Atoms form covalent bonds.
Atoms gain or lose electrons.
Two atoms share electrons.
Atoms combine to make a larger atom.
4
Atoms in molecules share pairs of electrons when they make
covalent bonds
ionic bonds
specific heat
hydrogen bonds
5
The variables that DO NOT change in an experiment are called
independent variables
dependent variables
constants/controls
observations
6
An ion is formed when an atom gains or loses
protons
neutrons
bonds
electrons
7
In order for the Cl atom to become stable,
Electron must be transferred from the Na to Cl's outer shell
Proton must be transferred from Na to Cl's outer shell
Electron must be transferred to Cl's nucleus
Proton must be transferred to Cl's nucleus.
8
The smallest basic unit of matter is the
cell.
compound.
atom.
molecule.
9
Which particle determines the properties of an element?
quarks
neutrons
protons
electrons
10
This is an example of a
nucleus
covalent bond
ionic bond
sucrose
11
What is an example of an element?
Neon
Gold
Kryptonium
Steel
12
How does an ion become negatively charged?
It gains electrons.
It loses electrons.
13
A substance that is composed of only one type of atoms is called a(n)
nucleus
are attracted to the positive charge of neutrons
cell
element
14
Is this atom chemically stable?
Yes
No
15
Which phrase best describes atoms?
single-celled organism
positively charged particles
smallest basic units of matter
parts of a nucleus
16
This is a picture of
H2O
covalent bond
A nucleus
ionic bond
17
The electrons of an atom
"orbit" the nucleus in various energy levels
are attracted to the positive charge of neutrons
Are found in the nucleus along with the protons
have a positive charge
18
What is the negatively charged particle found in an atom called?
electrons
prions
neutrons
protons
19
How does an ionic bond form?
Atoms share electrons.
Positive and negative ions attract
Electrons are exchanged between atoms.
Two atoms combine as one.
20
Atoms connected by covalent bonds share
carbon and oxygen
hydrogen ions
pairs of electrons
ionic compounds
21
What is a compound?
two atoms of a single element bonded together
a molecule of two oxygen atoms
separate atoms of multiple elements in varying ratios
atoms of different elements bonded in certain ratios
