Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
In the term trace elements, the modifier trace means- A- the element is required in very small amounts B- the element can be used as a label to trace atoms through and organism's metabolism C- the element is very rare on earth D- the element enhances health but is not essential for the organism's long-term survival E- the element passes rapidly through an organism |
A- the element is required in very small amounts |
Trace |
|
|
Which of these is a synonymous pair of terms? A- hydrogen ion - hydroxide ion B- hydrogen ion - proton C- hydroxide ion - hydronium ion D- water - hydronium E- hydrogen - htdronium ion |
E- hydrogen - hydronium ion |
|
|
|
An element is to a(an) ________ as a tissue is to a(an) __________. A- atom; organism B- compound; organ C- molecule; cell D- atom; organ E- compound; organelle |
B- compound; organ |
|
|
|
What is the main thesis of Lawrence Henderson's The Fitness of the Environment? A- Earth's environment is constant B- It is the physical environment, not life, that has evolved. C- The environment of Earth has adapeted to life D- Life as we know it depends on certain environmental qualities on Earth E- Water and other aspects of Earth's environment exist because they make the planet more suitable for life. |
D- Life as we know it depends on certain environmental qualities on Earth |
|
|
|
As a reuslt of photosynthesis, plants release _______ into the atomosphere. A- methane B- carbon dioxide C- sugar D- minerals E- oxygen |
E- oxygen |
|
|
|
In a water molecule, hydrogen and oxygen are held together by a(an) ___________ bond. A- double covalent B- ionic C- nonpolar covalent D- hydrogen E- polar covalent |
E- polar covalent |
|
|
|
For two bodies of matter in contact, heat always flows from- A- the body with greater heat to the one with less heat B- the body if higher heat temperature to the one of lower temperature C- the denser body to the less dense body D- the body with more water to the one with less water E- the larger body to the smaller body |
A- the body with greater heat to the one with less heat |
|
|
|
Results from a transfer of electron(s) between atoms |
Ionic bond |
|
|
|
Results from unequal sharing of electrons between atoms |
Polar covalent bond |
|
|
|
Explains most specifically the attraction of water molecules to one another |
Hydrogen bond |
|
|
|
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many electrons does boron have? A- 11 B- 15 C- 0 D- 5 E- 2 |
D- 5 |
|
|
|
What is the atomic mass of an atoms that has 6 protons, 6 neutrons, and 6 electrons? A- 6 B- 8 C- +1 D- 12 E- 18 |
D- 12 |
|
|
|
A measure of the average kinetic energy of the molecules in a body of matter |
Temperature |
Average kinetic energy |
|
|
The number of grams of a substance that equals its molecular mass in daltons |
Mole |
|
|
|
A weak acid or base that combines reversibly with hydrogen ions |
Buffer |
|
