Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Biology 1 Honors > Chapter 2 Test Vocab > Flashcards

Chapter 2 Test Vocab Flashcards

(69 cards)

Start Studying
1
Q

Matter

A

Anything that occupies space and has mass—> found as liquids, solids, and gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Elements

A

A substance that cannot be broken down by other substances by ordinary chemical means

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Compound

A

A substance consisting of two or more elements in a fixed ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Trace Elements

A

a chemical element present only in minute amounts in a particular sample or environment.
a chemical element required only in minute amounts by living organisms for normal growth.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Organisms

A

Made up of matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Matter is….

A

made up of elements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many elements are there?

A

92

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Isotope

A

An element that has the same # of protons but different # of nuetrons
(most stable, some radioactive)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What 4 elements make up 97% of us

A

carbon, oxygen, hydrogen, nitrogen (NOCH)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Trace elements are….

A

essential in smaller quantities (ex. iodine, florine, iron)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

all elements are electrically…
1. negative
2. positive
3. nuetral

A
  1. nuetral
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Atom

A

The smallest unit of matter that still retains the properties of an element

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Subatomic particles

A

protons, neutrons, electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Atomic Number

A

The number of protons in an element (same number of protons and electrons)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Atomic Mass

A

the sum of protons and neutrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The unit of measurement for atomic mass

A

dalton

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

mass of protons and neutrons

A

1 dalton

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

mass of electrons

A

1/2,000 of protons and neutrons, barely contributes to the mass of an atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

stable isotopes

A

nuclei remain intact forever

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

radioactive isotopes

A

nucleus decays randomly, gives off particles and energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Matter cannot be
A. broken down any further
B. expanded any further

A

A. broken down any further

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Proton charge, mass, and location

A

Charge: (+)
Mass: 1 amu
Location: nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Neutron charge, mass, and location

A

Charge: (o)
Mass: 1 amu
Location: nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Electron charge, mass, and location

A

charge: (-)
mass: 1/2000 amu
location: electron shells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Two famous radioactive elements
oxygen, glucose
26
common trace element in the body
zinc
27
false statement regarding matter
all matter exits in the form of compounds
28
makes up a molecule of water
2 hydrogen, 1 oxygen
29
Radioactive compounds can be used in....
the metabolic process
30
Postitive use of radioactive compounds
MRI's
31
NEGATIVE use of radioactive compounds
atomic bombs
32
Involved in an atom's chemical activity A. Protons B. Neutrons C. Electrons
C. Electrons
33
Electron Shell
Where electrons are located
34
Periodic Table: Columns/Groups
vertical, number of valence electrons, charge
35
Periodic Table: Periods
Horizontal, determine the number of electron shells
36
Ionic Bond
The transfer of electrons between atoms
37
Covalent Bonds
The sharing of electrons between atoms
38
Valence electrons
The electrons on the outermost shell of the atom
39
Chemical Bonds
Hold atoms together
40
Noble Gases
8 valence electrons
41
Molecule
two or more atoms held together by COVALENT bonds
42
Electronegativity
The measurement of an atoms attraction for shared electrons (in covalent bonds, = electronegativity allows them to share electrons) THE HIGHER THE BETTER
43
Non polar covalent bonds
atoms of the same element, equal electronegativity, strongest bond
44
Polar covalent bonds
Two atoms differ in electronegativity- one NEGATIVE charge, 1 POSITIVE charge
45
Covalent bonds are A. stronger than ionic bonds B. weaker than ionic bonds
A. Stronger than ionic bonds
46
Anion
Negative, gains electrons
47
Cation
Positive, gives electrons
48
Ion
An atom or molecule with an electrical charge after gaining or losing electrons -causes the atom to have an electrical charge
49
Ionic Bonds
Attraction between two ions with opposite charges, the resulting compound is electrically neutral
50
Hydrogen Molecules
Made with water molecules
51
Polar Molecule
An unequal distribution of charges
52
Chemical Reaction
Breaking existing chemical bonds and forming new ones, changes one set of chemicals to another set of chemicals Don't create destroy matter, only rearrange it
53
Reactants
The conversion of the starting materials
54
Product
The material from the chemical reaction
55
Cohesion
Molecules of the same kind stick together
56
Adhesion
When two substances stick togther
57
Surface Tension
How difficult it is to break the surface of the liquid
58
Thermal energy
Energy associated with the movement of atoms and molecules
59
Heat
The thermal energy in transfer from a warmer to a cooler body of matter
60
Evaporate
changes the physical state from liquid to gas
61
Evaporative cooling
The surface of water cools down
62
3 Forms of water
liquid, solid, gas
63
Solution
A liquid consisting of a mixture of two or more substances
64
Solvent
The liquid that gets dissolved into
65
Solute
The substance dissolved
66
Aqueous solute
The water is the solvent
67
The pH scale acids:
Contains H+, donates H+ to solutions, 1-6 on the pH scale
68
The pH scale base
OH-, reduces H+ in a solution, 8-14 on the pH scale
69
Buffer
Limits the amount of changes in pH

Biology 1 Honors (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions