Chapter 3 Questions Flashcards
1
Q
Which significant family group is non reactive but act as simple asphyxiants? A. Alkali metals B. Nobel gases C. Alkaline earths D. Halogens
A
B. Nobel gases
2
Q
At the core of most hazardous material reactions with the environment and with other materials is: A. Atomic stability B. Chemical bonding C. Endothermic source D. A significant family group
A
C. Chemical bonding
3
Q
Which of the following is one of the predictable four family groups? A. Alkali metals B. Non-metals C. Semimetals D. Transitional metals
A
A. Alkali metals
4
Q
What consists of two or more substances that are physically mixed, but not chemically bonded to one another? A. An element B. A compound C. A salt D. A mixture
A
D. A mixture
5
Q
A special term for when a liquid or gas completely dissolves in another liquid or gas is: A. Decomposition B. Concentrations C. Polymer D. Miscibility
A
D. Miscibility
6
Q
The majority of reactions liberate energy as heat and sometimes heat, light, and sound and are known as: A. Ionic B. Exothermic C. Endothermic D. Covalent
A
B. Exothermic
7
Q
Substance of two or more elements that have been United chemically are: A. Slurries B. Solutions C. Mixtures D. Compounds
A
D. Compounds
8
Q
What cannot be broken down into anything simpler without getting in to subatomic structure? A. Solutions B. Salts C. Compounds D. Elements
A
D. Elements
9
Q
Measures of how much of each compound is present in a mixture are expressed as: A. Concentrations B. Polarity C. Decomposition D. Miscibility
A
A. Concentrations
10
Q
A tool for organizing and displaying the elements in a way that provides some basic information about their characteristics is the: A. Four family groups B. Periodic table C. Atomic number D. Octet rule
A
B. Periodic table
11
Q
The basic building block of any substance is the: A. Nucleus B. Electron C. Neutron D. Atom
A
D. Atom
12
Q
An element with a filled outer shell will be: A. A mixture B. A compound C. Chemical bonded D. Atomically stable
A
D. Atomically stable
13
Q
Soluble material will: A. Become toxic when exposed to air B. Float in liquid C. Dissolve in liquid D. Turn to gas when exposed to air
A
C. Dissolve in liquid
14
Q
To be stable, an atom must have a(n): A. Outer wheel ready to accept electrons B. Odd number of electrons C. Even number of electrons D. Completely filled outer shell
A
D. Completely filled outer shell
15
Q
Which describes elements?
A. They cannot be broken down into anything simpler without getting into subatomic structure
B. They must be chemically bonded to another element to be stable
C. They are chemically stable in their our forms
D. They are divided into salts and non salts
A
A. They cannot be broken down into anything simpler without getting into subatomic structure
16
Q
The atomic number of an element at its number of: A. Neutrons B. Protons C. Atoms D. Nuclei
A
B. Protons
17
Q
One of the differences between ionic and covalent bonds is that ironically bonded compounds: A. Have flash points B. Are not solids C. Do not polymerize D. will polymerize
A
C. Do not polymerize
18
Q
For the most part, as the atomic number increases, so does the: A. Reactivity B. Atomic weight C. Bond energy D. Decomposition
A
B. Atomic weight
19
Q
Materials that ignite on contact with other materials are known as: A. Hypergolic B. Water reactive C. Air reactive D. Exothermic
A
A. Hypergolic
20
Q
Bonds that are formed by the transfer of electrons from a metal element to a nonmetal element are: A. Resonant B. Exothermic C. Ionic D. Covalent
A
C. Ionic
21
Q
Bond energy is released when: A. An atom gains an electron B. An atom loses an electron C. The bond is broken D. The bond is formed
A
C. The bond is broken
22
Q
Materials that are immiscible will: A. Decompose when exposed to air B. Dissolve in a liquid C. Not react to exothermic stimuli D. Not mix or dissolve in each other
A
D. Not mix or dissolve in each other
23
Q
Hydrocarbons will not dissolve in water to any appreciable amount because they are: A. Miscible B. Polar C. Exothermic D. Non polar
A
D. Non polar
24
Q
What becomes important when evaluating vapor density, specific gravity, detection, and other related properties? A. The element’s miscibility B. The element’s solubility C. The weight of an element or compound D. The symbol of the element or compound
A
C. The weight of an element or compound
25
```
Which significant family group, while chemically inert, can still act as asphyxiants?
A. Alkaline metals
B. Halogens
C. Alkali metals
D. Noble gases
```
D. Noble gases
26
```
Removing the heat from an exothermic reaction:
A. Intensifies the reaction
B. Will only slow the reaction
C. Eventually stops the reaction
D. Speeds up the reaction
```
C. Eventually stops the reaction
27
```
The minimum amount of energy needed to start a chemical reaction is known as:
A. Mechanical energy
B. Potential energy
C. Activation energy
D. Bond energy
```
C. Activation energy
28
```
The fact that 1 percent caustic (sodium hydroxide) can cause skin burns if not washed off and 50 percent caustic will cause serious burns immediately on contact is an example of the effects of:
A. Concentration
B. Polarity
C. Solubility
D. Miscibility
```
A. Concentration
29
```
For solids dissolved in liquids, heat generally:
A. Increases solubility
B. Decreases solubility
C. Decreases concentration
D. Increases concentration
```
A. Increases solubility
30
```
An example of a mixture is:
A. Sodium chloride
B. Gasoline
C. Oxygen
D. Salt water
```
B. Gasoline
31
```
Elements with a second shell will attempt to achieve eight electrons on their out shells, in a reaction called the:
A. Duet rule
B. Endothermic rule
C. Exothermic rule
D. Octet rule
```
D. Octet rule
32
When compounds contain resonant bonds, as do the aromatic hydrocarbons, the electrons:
A. Rotate or alternate rapidly between the carbon atoms
B. Are transferred form a nonmetal atom to a metal atom
C. Will become positively charged
D. Are always maintained at an odd number
A. Rotate or alternate rapidly between the carbon atoms
33
```
What is a reflection of how strongly one atom attracts the electrons of another atom in a covalent bond?
A. Polymerization
B. Solubility
C. Polarity
D. Miscibility
```
C. Polarity
34
```
What type of reaction transfers electrons from one atom, compound, or molecule to another?
A. Resonant
B. Covalent
C. Polymerization
D. Oxidation-reduction
```
D. Oxidation-reduction
35
```
The minority of reactions in which the products absorb energy from the atmosphere are known as:
A. Ionic
B. Exothermic
C. Covalent
D. Endothermic
```
D. Endothermic
36
```
Which alkaline earth burns intensely with such a bright while flame that prolonged unprotected viewing of it can cause retinal damage?
A. Argon
B. Calcium
C. Magnesium
D. Potassium
```
C. Magnesium
37
```
The reaction of monomers combining into polymers generates:
A. Oxygen
B. Heat
C. Catalysts
D. Inhibitors
```
B. Heat
38
```
What type oof bond is formed between two or more nonmetal elements?
A. Ionic
B. Covalent
C. Exothermic
D. Resonant
```
B. Covalent
39
```
Which of the four significant family groups are nonflammable but are powerful oxidizer that support combustion?
A. Alkali metals
B. Alkaline earths
C. Halogens
D. Noble gases
```
C. Halogens
40
```
A reaction in which a compound breaks down into smaller components is known as a(n):
A. Covalent reaction
B. Decomposition reaction
C. Oxidation-reduction reaction
D. Endothermic reaction
```
B. Decomposition reaction
41
```
When alkali metals come in contact with water, they:
A. Produce high levels of oxygen gas
B. Cease any chemical reaction
C. Become simple asphyxiants
D. Produce flammable hydrogen gas
```
D. Produce flammable hydrogen gas
42
```
Compounds are divided into:
A. Metals and non metals
B. Solutions and slurries
C. Salts and non salts
D. Exothermic and endothermic
```
C. Salts and non salts
43
```
What type of subatomic particle orbits the nucleus and has a negative charge?
A. Electrons
B. Neutrons
C. Protons
D. Nuclei
```
A. Electrons
44
```
Gases that exist as a compound of two identical atoms are called:
A. Diatomic gases
B. Noble gases
C. Covalent gases
D. Ionic gases
```
A. Diatomic gases
45
```
What are substances added to other products either to initiate or to speed up chemical reactions?
A. Monomers
B. Catalysts
C. Polymers
D. Inhibitors
```
C. Catalysts
46
```
What can be called a complex oxidation-reduction involving fuel and an oxidizing agent?
A. Combustion
B. Mixing bleach and ammonia
C. Decomposition
D. Polymerization
```
A. Combustion
