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Atoms, Ions, and Molecules Flashcards | StudBud
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Atoms, Ions, and Molecules
Atoms, Ions, and Molecules
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Biology Quiz on basics of Chemistry (Section 2.1)
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1
The variables that DO NOT change in an experiment are called
observations
independent variables
constants/controls
dependent variables
2
What is the negatively charged particle found in an atom called?
electrons
neutrons
prions
protons
3
What is a compound?
separate atoms of multiple elements in varying ratios
atoms of different elements bonded in certain ratios
two atoms of a single element bonded together
a molecule of two oxygen atoms
4
Which phrase best describes atoms?
single-celled organism
smallest basic units of matter
parts of a nucleus
positively charged particles
5
Which of the following cannot be broken down by ordinary chemical means?
element
molecule
bond
compound
6
The smallest basic unit of matter is the
molecule.
cell.
compound.
atom.
7
An ion is formed when an atom gains or loses
electrons
protons
neutrons
bonds
8
What distinguishes one element from another?
The number of neutrons.
The number of electrons.
The shape.
The number of protons.
9
Atoms in molecules share pairs of electrons when they make
specific heat
hydrogen bonds
ionic bonds
covalent bonds
10
Atoms connected by covalent bonds share
carbon and oxygen
pairs of electrons
hydrogen ions
ionic compounds
11
How do ions form?
Atoms combine to make a larger atom.
Atoms form covalent bonds.
Atoms gain or lose electrons.
Two atoms share electrons.
12
How does an ionic bond form?
Electrons are exchanged between atoms.
Atoms share electrons.
Positive and negative ions attract
Two atoms combine as one.
13
What is an example of an element?
Neon
Kryptonium
Steel
Gold
14
How does an ion become negatively charged?
It gains electrons.
It loses electrons.
15
Which particle determines the properties of an element?
neutrons
electrons
quarks
protons
