Chapter 2 The Chemical Basis Of Life Flashcards

1
Q

Anything that occupies space and has mass

A

Matter

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2
Q

3 types of matter

A

Solid, liquid, gas

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3
Q

Amount of matter in an object

A

Mass

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4
Q

Gravitational force acting on an object

A

Weight

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5
Q

It is the simplest form of matter

A

Element

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6
Q

Smallest particle of an element

A

Atom

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7
Q

What makes up an atom

A

Protons, electrons, and neutrons

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8
Q

What are the subatomic particles

A

Proton, neutron, electrons

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9
Q

Define Proton

A

Positive charged particle located inside the nucleus

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10
Q

Define neutron

A

Neutral charged particle located inside the nucleus

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11
Q

Define electron

A

Negative charged particle located outside the nucleus

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12
Q

Define atomic number

A

The number of protons in each atom

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13
Q

Define mass number

A

The number of protons and neutrons in each atom

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14
Q

When do chemical bonds happen

A

Chemical bonds occur when outermost electrons (valence electrons) are transferred or shared between atoms

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15
Q

Types of chemical bonds

A

Ionic, covalent, hydrogen

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16
Q

A charged atom formed because of a donation or gain of an electron(s)
Example: NA^+

A

Ion

17
Q

Occurs when there is an attraction between two oppositely charged ions
Example: NaCl

A

Ionic bonding

18
Q

Forms when a positive end of one polar molecule is weakly attracted to the negative end of another polar molecule

A

Hydrogen bonding

19
Q

Occurs when there is a formation or breaking of chemical bonds between atoms, ions, molecules, or compounds

A

Chemical reactions

20
Q

Types of chemical reaction
1. Building a new molecule
2. Breakdown molecule

A

Synthesis reaction
Decomposition reaction

21
Q

The capacity to do work

A

Energy

22
Q

Moving of the matter

A

Work

23
Q

Is a form of energy stored in chemical bonds

A

Chemical energy

24
Q

Factors which influence the rate of chemical reactions

A

Concentration of the reactants
Temperature
Catalyst

25
Q

Four major groups of organic molecules essential to living organisms are:

A

Carbohydrates
Lipids
Proteins
Nucleic acids

26
Q

Types of lipids

  1. Single covalent bonds between carbon atoms
  2. One or more double covalent bonds between carbons
A

Saturated
Unsaturated

27
Q

Characteristics of proteins
_____ are the building blocks

A

Amino acids

28
Q

Occurs when the hydrogen bonds that maintain shape of a protein are broken and the protein becomes nonfunctional

A

Protein denaturation

29
Q

The ratio between nitrogen and oxygen in carbohydrates

A

2:1

30
Q

Often called as energy currency of cells because it is capable of storing and providing energy

A

ATP

31
Q

Nucleotides are building blocks of nucleic acids
Composition of Nucleotides

A

Nitrogen base,
phosphate
5-Carbon sugar