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Ch. 3 Chemical Foundations: Elements, Atoms, and Ions Laura Evans P.2 Flashcards | StudBud
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Ch. 3 Chemical Foundations: Elements, Atoms, and Ions Laura Evans P.2
Ch. 3 Chemical Foundations: Elements, Atoms, and Ions Laura Evans P.2
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Questions
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Answers
1
Melting icecube is an example of a...
Physical change
Physical property
Chemical change
Chemical property
2
Atoms with a center of positive charge, around which tiny electrons move in a space is...
chemical formula
nuclear atom
isotopes
compound
3
An electric current can travel along a metal wire because electrons move freely through wire
False
True
4
_____ gas consists of a collection of separate argon atoms
Noble
Argon
Ionic
Ideal
5
A negatively charged ion is called a/an...
anion
cation
6
A positive ion is called a/an...
anion
cation
7
Who figured out that atoms must contain electrons?
Dalton
Rutherford
Einstein
Thomson
8
What is the most common element on earth?
Nitrogen
Carbon
Oxygen
Iron
9
Ions are formed by changing the number of protons in an atom's nucleus
False
True
10
Which is NOT apart of Dalton's Atomic Theory?
Atoms of a given element are different from other elements
The number of an atom is indicated by a subscript
All atoms of a given element are identical
Elements are made of tiny particles called atoms
11
There are 2 ways to get an ion: gain an electron or lose an electron?
False
True
12
A compound formed between a metal and nonmetal are called...
Bonds
Electrons
Ionic compounds
Diatomic molecules
13
The first column of elements in the periodic table is...
Alkaline earth metals
Transition metals
Noble gases
Alkali metals
14
Ions can conduct an electric current only if the ions can move
True
False
15
What is Rutherford's Experiment?
Experiment accidently done that discovered the first x-ray
Experiment done that discovered photosynthesis
Experiment directing "a" particles toward a thin metal foil
Experiment in which the first atom was discovered
16
Atoms with the same number of protons, but different numbers of neutrons are...
Isotopes
Ions
Alloy
Trace elements
17
What are the "sprinkles" in the Plum Pudding Model?
nuclei
protons
electrons
neutrons
18
The 7th group of elements on the periodic table is...
Halogens
Noble gades
Transistion metals
Alkaline metals
19
Sodium chloride can be decomposed to the elements sodium metal and chlorine gas
False
True
20
What is a compound?
Substance composed of atoms of two or more elements
Atoms that are stuck together
The "stuff" of which the universe is composed of
Substance made by bonding of atoms
