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Chemistry Midterm
Chemistry Midterm
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A #chemistry quiz with all #vocabulary from Chapters 1 through 6 for my midterm project
Flashcards
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Questions
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Answers
1
Which is considered a physical change?
Cutting
Melting
Rusting
Burning
2
Type of bond with e difference between 1.6 and 0.3
Covalent polar
Ionic
Covalent nonpolar
3
What is a mixture?
Blend of two or more kinds of matter that retain properties
Substance that can be broken down into simple structures
4
Percentage error is calculated by subtracting ____ from the expiremental value then dividing
Precision
Mass
Accuracy
Accepted value
5
What theory states that sets of valence causes sets to be orientated apart from each other?
Atomic
VESPR
Conservation of Mass
Gravity
6
Chemical bonding that results from the electrical attraction between cations and anions
Ionic bonding
Physical change
Ionization
Covalent bonding
7
What is this called?
Lewis structure
Dot diagram
Venn diagram
Orbital notation
8
Which is NOT a heterogeneous mixture?
Salad
Granite
Soil
Air
9
What is the study of the composition, structure, and properties of matter that undergo changes?
Biology
Chemistry
Science
Physics
10
Composed of positive and negative ions that are combined so that charges are equal
Nonpolar
Covalent compound
Heterogenous mixture
Ionic compound
11
Greek philosopher who first thought of the atom
Democritus
Dalton
Plato
Aristotle
12
What makes the Noble Gases so special?
They have no valence electrons
They attract other elements
They have all available valence electrons
They are highly reactive
13
In 1808, this English schoolteacher proposed an explanation for laws later called Atomic Theory
Bell
Democritus
Newton
Dalton
14
TRUE OR FALSE: a theory is a law followed by all scientists
True
False
15
What state of matter are most nonmetals at room temp?
Plasma
Liquid
Gas
Solid
16
Which of the following is NOT a state of matter?
Element
Gas
Solid
Plasma
17
What type of energy is used by metallic bonds?
Metallic
Lattice
Nonpolar
Ionic
18
TRUE OR FALSE: a quantum of energy is the highest quantity of energy that can be lost or gained
False
True
19
TRUE OR FALSE: covalent bonding is the sharing of electron pairs between two or more atoms
False
True
20
Which of the following DOES depend on the amount of matter present?
Intensive properties
Extensive properties
21
A state in which an atom is at its highest potential energy
Excited state
Ground state
22
Which refers to the closeness of measurement to the accepted value?
Precision
Accuracy
23
Which is an example of a homogenous mixture?
Salt water
Soil
Blood
Granite
24
Type of bond with difference between 3.0 and 1.7
Covalent Nonpolar
Covalent Polar
Ionic
25
TRUE OR FALSE: the photoelectric effect refers to the emission of electrons from a metal
True
False
26
What is this called? HINT: a crystalline compound formed by ionic compounds
Dot diagram
Metallic
Lattice
Polyatomic
27
What is a measure of the ability of an atom in a chemical compound to attract electrons
Valence
Ionization
Electronegativity
Covalent
28
The energy change that occurs when an electron is acquired by a neutral atom
Chemical change
Ionization
Electron affinity
Photoelectric
29
TRUE OR FALSE: a negative ion is known as a cation
True
False
30
The process that refers to the formation of an ion
Bonding
Physical change
Chemical reaction
Ionization
31
Type of bond with difference of 0.2 and 0
Ionic
Covalent Nonpolar
Covalent Polar
32
Which family is found in between metals and nonmetals on the Periodic Table?
Noble Gases
Earth Metals
Alkaline Metals
Metalloids
33
"A fixed composition in which each sample has the exact characteristics and composition"
Compound
Homogenous
Mixture
Pure Substance
34
Which is one of the six branches of chemistry?
Analytical
Theoretical
Organic
Bichemistry
35
What is mass?
Smallest unit of measurment
Measure of the amount of matter
Anything that takes up space
Stable substance
36
TRUE OR FALSE: metals are excellent conductors
False
True
37
What is an educated guess that you formulate before an expirement?
Technological Development
Hypothesis
Data Chart
Research
38
What does this symbol stand for?
Frequency
Hertz
Atomic mass
Wavelength
39
Which is not an orbital?
P
F
S
K
40
Which of the following is an example of a physical property?
Reactivity
Melting point/boiling point
Burning
Mass
41
Electrons available to be lost, gained, or shared in formation of chemical compounds is called
Outer shell electrons
Ion
Electron cloud
Valence electrons
42
A molecular compound is
A chemical compound whose simplest units are molecules
When two atoms share valence electrons
43
What is a compound?
Measure of the amount of matter
Two or more elements chemically bonded
Pure substance that cannot be broken down
A substance that can be broken down
44
TRUE OR FALSE: the atom is the largest unit of an element
True
False
45
What is amu?
Isotope
Atomic Mass Unit
Atomic number
The average atomic mass
46
What are the vertical columns on the Periodic Table called?
Groups
Periods
Rows
Families
47
What is basic rsearch?
To solve a problem
For the Salem of increasing knowledge
To help separate a substance
What you do before starting an experiment
48
In a chemical reaction, what is called the "products?"
Substances that react
The elements in a reaction
Result of separating a compound
The substances formed by the reaction
49
Which fits the definition: anything that has mass and takes up space?
Element
Mass
Atom
Matter
50
What is this element's atomic mass?
Li
7
3
6.9
51
What is a substance that has a definite composition?
Solution
homogeneous mixture
Nonpolar
Chemical
52
TRUE OR FALSE: volume is the amount of space occupied by an object
False
True
53
What is a fixed composition with the exact same properties throughout?
Solution
Compound
Mixture
Pure Substance
