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Atoms, Ions, and Molecules Flashcards | StudBud

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Atoms, Ions, and Molecules

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Biology Quiz on basics of Chemistry (Section 2.1)

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Questions 14

Answers

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