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Q 1/48
Score 0
What is the relationship between the number of protons and electrons in a neutral atom?
60
There are twice as many protons as electrons.
There are an equal number of protons and electrons.
There are twice as many electrons as protons.
When added together, the number of protons and electrons equals the number of neutrons.
Q 2/48
Score 0
A ____ is formed when two atoms share one or more pairs of electrons.
60
ionic bond
polar bond
covalent bond
hydrogen bond
48 questions
Q.
What is the relationship between the number of protons and electrons in a neutral atom?
1
60 sec
Q.
A ____ is formed when two atoms share one or more pairs of electrons.
2
60 sec
Q.
When a solution has more hydrogen ions than hydroxide ions, it is considered ____.
3
60 sec
Q.
What type of carbohydrate is sucrose, or table sugar?
4
60 sec
Q.
Which type of macromolecule provides long-term storage of energy and carbon?
5
60 sec
Q.
What macromolecule is shared by RNA and DNA?
6
60 sec
Q.
The most basic unit of an element is:
7
60 sec
Q.
Which of the following subatomic particles carries a negative charge?
8
60 sec
Q.
Which of the following atoms is a negatively charged ion?
9
60 sec
Q.
An ionic bond is most likely to form between:
10
60 sec
Q.
A covalent bond is most likely to form between:
11
60 sec
Q.
Atoms are the smallest unit of an element that retains its characteristic properties.
12
60 sec
Q.
When water molecules have a tendency to stick together making it difficult to break the surface of water what TWO properties cause this characteristic of water?
13
60 sec
Q.
The nucleus of an atom contains protons and electrons.
14
60 sec
Q.
Typically, nitrogen atoms are composed of seven electrons, seven protons, and seven neutrons. An isotope of nitrogen could
15
60 sec
Q.
In the equation A+B -----> AB, What are the reactants?
16
60 sec
Q.
What is the fundamental difference between covalent and ionic bonding?
17
60 sec
Q.
Many fabrics are coated with a "water-repellent" chemical that causes water to bead on the fabric instead of soaking in. This probably occurs because
18
60 sec
Q.
The oxygen atom of a water molecule
19
60 sec
Q.
A solute is
20
60 sec
Q.
Water molecules stick to other water molecules because
21
60 sec
Q.
The ability of water molecules to form hydrogen bonds with other water molecules is critical to
22
60 sec
Q.
A solution with a pH of 7 is
23
60 sec
Q.
Most of a cell's catalysts that speed up reactions are called enzymes and are made of which macromolecule?
24
60 sec
Q.
Which list below consists of only polymers?
25
60 sec
Q.
How many electrons are shared in a double bonded covalent compound?
26
60 sec
Q.
How many electrons are shared in a triple bonded covalent compound?
27
60 sec
Q.
How many electrons are shared in a single bonded covalent compound?
28
60 sec
Q.
When testing on the pH scale the OH- ions are measured to find the pH of a solution.
29
60 sec
Q.
The following are all examples of lipids except __________.
30
60 sec
Q.
All macromoleculess are considered organic because they contain hydrogen.
31
60 sec
Q.
On the image, which letter represents the enzyme?
32
60 sec
Q.
On the image, which letter represents the substrate?
33
60 sec
Q.
Enzymes are composed of what organic molecule?
34
60 sec
Q.
Enzymes are protein catalysts. True or false?
35
60 sec
Q.
A catalyst is:
36
60 sec
Q.
Which solution is the strongest acid?
37
60 sec
Q.
Which solution is the strongest base?
38
60 sec
Q.
Proteins have several functions. Which of the following is NOT a function of proteins?
39
60 sec
Q.
What type of ion is formed when an atom gains an electron?
40
60 sec
Q.
Which of the following is NOT associated with the macromolecule nucleic acids?
41
60 sec
Q.
Lipids store little to no energy.
42
60 sec
Q.
Polar molecules are said to have TWO poles: one slightly positive and one slightly negative.
43
60 sec
Q.
The image shows what characteristic of water?
44
60 sec
Q.
The image on the left shows the monomers of proteins. What are the monomers called?
45
60 sec
Q.
If a solution has a high number of OH- ions, what is true about the solution?
46
60 sec
Q.
Which of the following is a form of the macromolecule of carbohydrates?
