CHEM by LANCI 1 Flashcards
(100 cards)
1
Q
What is the chemical symbol for the element potassium?
A
k
2
Q
What is the standard unit of length?
A
meter
3
Q
What is the Carbonate radical charge?
A
-2
4
Q
Which radical contains the greater number of oxygen atoms?
sulfate or sulfite
A
sulfate
5
Q
Nonmetals and halogens are electron___________
A
RECEIVERS
6
Q
Aluminum has a valence of what?
A
+3
7
Q
Which of the following is a noble gas?
Ag,Ar, Br, CO2
A
Ar
8
Q
What is the name of the radical with the symbol (NO3)-1
A
nitrate
9
Q
What is Oxygen?
metal, non-metal, metalloid, noble gas
A
Non Metal
10
Q
WHAT is defined as anything that has mass and occupies space.
volume,matter, plasma, weight
A
MATTER
11
Q
A liquid’s resistance to flow is called its WHAT?
A
viscosity
12
Q
In Physical Matter: mass divided by volume is known as WHAT?
A
density
13
Q
The conversion of a solid to a gas without passing through liquid form is WHAT
A
sublimation
14
Q
The physical state of matter that has no definite shape and no definite volume is called WHAT.
A
gas
15
Q
The smallest fundamental unit of an element that maintains all the distinguishing features of that element is a(n) __________?
A
ATOM
16
Q
The type of water that does contain minerals in solution, but not in sufficient quantities to destroy the cleansing action of soap is WHAT?
hard water
soft water
permanent hard water
temporary hard water
A
soft water
17
Q
A pH of 6.1 is considered WHAT?
alkaline
acidic
neutral
basic
A
ACIDIC
18
Q
WHAT can be defined as the union of the hydrogen ions of an acid with the hydroxyl ions of a base to form water, a neutral substance.
neutralization
hydrolysis
acidification
dessication
A
NEUTRALIZATION
19
Q
Which compound is released as putrefactive bacteria act on nitrogenous organic matter?
NH2
NO2
NH3
HCHO
A
NH3
20
Q
During dissociation, the positive poles are called WHAT?
A
ANODES
21
Q
WHAT IS the saturated hydrocarbon containing six carbon atoms called: ethane hexane decane propane
A
HEXANE
22
Q
When an alkane loses a hydrogen, a(n) \_\_\_\_\_\_\_\_\_\_\_\_\_ can attach at that point.
metal
functional group
alkyl group
radical
A
FUNCTIONAL GROUP
23
Q
WHAT IS Ar-X is the general formula for?
aromatic aldehyde
aromatic halide
aromatic ketone
Argon atom
A
AROMATIC HALIDE
24
Q
What is the functional group for an amine?
R-COOH
NH3
R-NH2
NH2
A
NH2
25
```
organic compounds are NOT WHAT?
usually flammable
slow to react
covalently bonded
soluble in water
```
soluble in water
26
GIVEN THIS EQUATION:
2H2(g) + O2(g) → 2H2O(l)
WHAT IS O2(g) is in the reaction?
reactant
27
Use the molecular coefficient to determine the number of each element present in 3CO2.
C=3
| O=6
28
Which subatomic particle has a positive charge?
PROTON
29
WHAT is the solvent in an aqueous solution.
WATER
30
```
Which of these do NOT influence Diffusion?
agitation
concentration
pressure
temperature
```
pressure
31
The element Be has:
atomic number: 4
atomic mass: 9
Identify the correct number of protons, electrons, neutrons, and valence for this element .
Protons= 4
Electrons=4
Neutrons=5
Valence +2
32
```
Metals form which type of ions?
anions
cations
neutral ions
NONE of the above
```
CATIONS
33
```
A solution that contains more of the solute than could be dissolved by the solvent under normal conditions is a ______ solution.
dilute
unsaturated
saturated
supersaturated
```
SUPER
34
Formaldehyde is mixed with WHAT to form Formalin?
Methyl Alcohol
35
Elements are arranged on the periodic table by WHAT?
ATOMIC NUMBER
36
```
All of the following are metalloids EXCEPT.
Silicon Si
Arsenic As
Aluminum Al
Antimony Sb
```
ALUMINUM
37
Heat is released in WHAT type of reaction?
exothermic
38
What is the number of protons, electrons, and neutrons for these
C-12
C-13
C-14
ISOTOPES.. do the math!
39
When bonds are formed by shared electrons they are called WHAT
COVALENT
40
```
Which forms positive ions?
metalloids
non-metals
metals
isotopes
```
METALS
41
WHAT IS A CATALYST
It effects a reaction by speeding i up or slowing is down without being consumed itself in the reaction
42
DIFFUSION IS WHAT?
is the process by which molecules, ions, or colloidal particles in solution move from an area of greater concentration to an area of lesser concentration until uniform concentration is achieved.
43
What is the compound that results from the combination of Na +and Cl-?
NaCl
44
```
Cells in a hypotonic solution swell and break. WHAT IS THAT CALLED?
hemolysis
crenation
plasmoptysis
diffusion
```
HEMOLYSIS
45
H2CO3 → CO2 + H2O is an example of what type of reaction?
DECOMPOSITION
46
Acid + Base → Salt + Water is the formula for a _______ reaction.
NEUTRALIZATION
47
If solutions A and B are of equal concentration they are said to be______
ISOTONIC
48
WHAT IS BRONZE?
ALLOY
49
```
Name the compound N2O4.
dinitrogen tetroxide
nitrogen oxide
dinitrogen oxide
nitrogen teroxide
```
dinitrogen tetroxide
50
WHATis a metal plus a hydroxide radical
BASE
51
The branch of chemistry that studies the properties and reactions of elements, excluding organic or certain carbon-containing compounds is WHAT
INORGANIC CHEMISTRY
52
Synonym for an element's combining capacity, aka oxidation number, is WHAT
VALENCE
53
The chemical symbol for the element Copper is WHAT
Cu
54
```
The two possible valences of the element Iron are
Answer
+1 and +2
-2 and -3
+2 and +3
-1 and -2
```
+2 and +3
55
```
Which is a noble gas?
Ne
Cl
N
H
```
Ne
56
```
Which is a metal?
Pb
He
O
Hg
```
Pb, Hg
57
```
Mega- means
1,000,000
1/1,000,000
1000
10,000
```
1MM
58
```
The boiling point of water is
232 degrees Fahrenheit
98.6 degrees Fahrenheit
100 degrees Fahrenheit
100 degrees Celsius
```
100 Celsius
| 212 F
59
1 cc = 1 mL
| TRUE OR FALSE
TRUE
| What does CC mean
60
Weight and mass are interchangeable.
| True or False
FAAAALSE. Think of yourself on the moon. You lose weight but not mass
61
Solvation is a chemical change.
| True or False
FALSE- disSOLVING something can be UNdissolved
62
```
Normal human body temperature is
37 degrees Celsius
37 degrees Fahrenheit
98.6 degrees Celsius
100 degrees celsius
```
37 and 98.6... you tell me which scale!
63
```
WHAT is a measure of the ability of an electric current or heat to flow through a substance.
density
conductivity
hygroscopicity
viscosity
```
CONDUCTIVITY. now define the others
64
```
The ratio of the density of a substance divided by the density of a standard is the WHAT of a substance.
gravitational density
reactivity
specific density
Specific gravity
```
Specific gravity- define the others
65
The number 2 in the compound H2O is WHAT
SUBSCRIPT
| what is coefficient?
66
```
The breaking down of water can be defined as WHAT
oxidation
reduction
combustion
hydrolysis
```
Oxidation.. pay attention!!!
| what is reduction?
67
```
The addition of hydrogen to a compound or element is WHAT
hydrolysis
oxidation
reduction
hydrogenation
```
reduction. look it up!
68
Cremation of remains is a physical change.
| TRUE OR FALSE
Can you UNcremate remains?
| FALSE
69
NH3 is neutralized by HCHO, forming urotropin and water.
| True or False
TRUE
70
Unsaturated hydrocarbons contain single bonds.
| True or False
FALSE- what contains single bonds?
71
```
The halogen that is a constituent of body proteins is WHAT
carbon
ammonia
bromine
nitrogen
```
NITROGEN.. WHY?
72
```
HCHO is the chemical formula for WHAT
urotropin
formaldehyde
methenamine
hydrocarbonic acid
```
Formaldehyde
73
```
The greater the delay to embalm after death occurs, the greater the build up of WHAT in the body.
ammonia
formaldehyde
hydrocarbons
propanol
```
AMMONIA- What makes ammonia in the body?
74
```
The saturated hydrocarbon with two carbons is the alkane known as
butane
methane
ethane
Urapane
```
ETHANE- what are the other prefixes?
75
```
Substances that cannot be broken down into simpler substances by chemical means are known as WHAT
mixtures
compounds
elements
molecules
```
ELEMENTS
| Why not the others?
76
```
The symbol ↓ in a chemical equation means WHAT.
heat is added
a precipitate is formed
a catalyst is present
heat is released
```
PRECIPITATE
| rain = precipitation and it drops DOWN like the arrow
77
Loss of electrons equals negative valence.
| True or False
```
FALSE
GIVING UP (LOSING) ELECTRONS MAKES YOU POSITIVE CHARGED
```
78
Electrons found in the outer orbit are known as the valence electrons.
True/False
TRUE
| what's another name for Orbit?
79
A planetary electron is also known as a valence electron.
| True/ False
FALSE- "planets" stay in orbit around the nucleus
80
Formalin is composed of 40% formaldehyde by weight.
| True/ False
FALSE- Why?
81
A heterogeneous mixture consists of visibly different substances.
True/ False
Hetero means different. Homo means same
82
The greater the difference in the concentrations of two solutions, the faster diffusion will take place.
True/ False
TRUE- solutions want to balance.. the bigger the difference, the faster the balance speed
83
```
Ca(OH)2 is named WHAT?
calcium hydroxide
calcium hypochlorite
calcium bicarbonate
monocalcium amphibiouschloride
```
Calcium Hydroxide... WHY?
84
The atomic number determines the number of protons.
| True/ False
TRUE- if you got this wrong you fail automatically ( actually it is false.. the number of protons determines the atomic number!- VBL)
85
Non-metals are electron donors.
| True/ False
FALSE- remember metals tend to be + making them electron donors.. this makes non-metals the opposite
86
The overall charge of the nucleus is positive.
| True/ False
FALSE
| just kidding.. true!
87
```
What solution contains a relatively small amount of solvent compared to solute.
saturated
dilute
concentrated
unsaturated
```
Concentrated- define the other three now
88
Atoms of the same element that have a different number of neutrons are called WHAT?
Isotopes- what do they have the same of?
89
Zn(OH)2 is an example of a(n)
| BASE, HYDROXIDE, ACID, OXIDE
trick.. its a base and a hydroxide
90
H2S is named WHAT
hydrosulfuric acid
hydrogen sulfide
hydrogen sulfate
sulfurous acid
Hydrosulfuric Acid
91
Which of the following would be considered a medium index arterial fluid?
1) 24
2) 25
3) 26
4) 27
24 and 25 both
92
What is the number used to represent the number of electrons lost, gained, or shared in a chemical reaction?
VALENCE NUMBER
93
```
Pb3(PO4)2 is WHAT
lead phosphite
lead phosphorous
lead phosphate
phosphoric phosphate
```
lead phosphate
| WHY isnt it phosphite?
94
What is a substance that will change the rate of a reaction yet is unchanged itself.
catalyst
anion
isotope
Catalyst- why?
95
```
What is defined as the number of grams of pure formaldehyde gas dissolved in 100 mLs of solution?
% by volume
% of gas
index
ratio
```
INDEX
96
```
What process allows the passage of solute molecules through a semi-permeable membrane holding back larger molecules but allowing smaller molecules to pass?
solvation
dialysis
diffusion
osmosis
```
Dialysis- what does your kidney do? what is osmosis?
97
```
What are the horizontal rows on the periodic table called?
columns
rows
groups
periods
```
Periods. the rows are called periods.
| What are the columns called?
98
The atomic mass is WHAT?
sum total of protons and neutrons
99
What are the three factors that effect chemical reactions?
1) catalyst
2) pressure
3) molecular weight
4) concentration
not 3
100
What is the most common symbol seen between the two sides of an equation?
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