Chemistry

Question 1

Matter

Answer 1

Anything that has mass and takes up space/volume

Question 2

All matter is composed of?

Answer 2

Elements

Question 3

Living organisms require how many elements?

Answer 3

20

Question 4

Our bodies are 95% made of what four elements?

Answer 4

Nitrogen, carbon, oxygen, hydrogen

Question 5

Positive Charge

Answer 5

Protons

Question 6

No charge

Answer 6

Neutrons

Question 7

Negative charge

Answer 7

Electrons

Question 8

Atomic number

Answer 8

The number of protons

Question 9

Atomic mass

Answer 9

Protons and neutrons added together

Question 10

Outermost shell is called?

Answer 10

Valence

Question 11

Isotopes

Answer 11

Occurs when an Atom gains/loses neutrons thus changing the atomic mass of the Atom, but atomic number stays the same

Question 12

Full outer shell means its?

Answer 12

Stable

Question 13

Ions are created when?

Answer 13

Atoms lose or gain electrons due to not being stable

Question 14

+ or - symbolizes?

Answer 14

Overall charge

Question 15

Ionic bond

Answer 15

A valence electron is given or received (transferred)

Question 16

Covalent bond

Answer 16

Valence electrons are shared with another atom

Question 17

Hydrogen bond

Answer 17

Weak bonds between H and other elements, mostly N and O

Question 18

Two or more elements combine to make?

Answer 18

Molecules

Question 19

Same element combining is called?

Answer 19

Diatomic

Question 20

Different elements combining is called?

Answer 20

Compound

Question 21

Molecular formulas represent what?

Answer 21

The type and number of atoms in a compound

Question 22

Subscript tells you what?

Answer 22

How many atoms of that element

Question 23

The lines in structural formula indicates what?

Answer 23

The type of bonds an atom has made

Question 24

Synthesis

Answer 24

Two or more atoms combine to make a new more complex substance

Question 25

Decomposition

Answer 25

A reactant molecule breaks to form a simpler product

Question 26

Exchange

Answer 26

Parts of different reactants recombine to form a new product

Question 27

Reversible

Answer 27

When the products that form can reverse back to become reactants again, then become products again

Question 28

Catalyst

Answer 28

A molecule that can change rate of the reaction without being consumed

Question 29

Electrolyte

Answer 29

When a substance decomposes and releases ions in water since it can conduct an electric current

Question 30

Electrolytes that release H+ ions are?

Answer 30

Acids pH from 0-6

Question 31

Electrolytes that combine with H+ ions are?

Answer 31

Bases pH from 8-14

Question 32

Inorganic chemicals (4)

Answer 32

Water, oxygen, carbon dioxide, salts

Question 33

Organic (3)

Answer 33

Carbohydrates, lipids, proteins

Question 34

Carbohydrates

Answer 34

Provides energy, atoms of carbon, hydrogen, and oxygen

Question 35

Monosacharides

Answer 35

One simple sugar, 6 carbons

Question 36

Disacharide

Answer 36

2 simple sugars

Question 37

Polysacharide

Answer 37

Many simple sugars

Question 38

Lipids

Answer 38

Insoluble in water, building blocks are 3 fatty acids called triglyceride, single bond is saturated, double is unsaturated, many is polyunsaturated

Question 39

Phospholipids

Answer 39

2 fatty acids

Question 40

Proteins

Answer 40

Energy source, receptors, antibodies, enzymes, made of amino acids, amino acids in a chain is a polypeptide

Question 41

Nucleic Acids

Answer 41

Takes part in protein synthesis, forms building blocks called nucleotides, RNA helps in protein synthesis, DNA stores info and "the code"

Question 42

The branch of science that deals with composition of substance is?

Answer 42

Chemistry

Question 43

What forms can matter be found in?

Answer 43

Solids, liquids, and gases

Question 44

An atom is made of?

Answer 44

A nucleus, protons, neutrons, and electrons

Question 45

When atoms combine they gains or lose?

Answer 45

Electrons

Question 46

An ion is?

Answer 46

An atom that is electrically charged

Question 47

An electrovalent bond is made by?

Answer 47

A positive and a negative ion attracting eachother

Question 48

Structural formula is?

Answer 48

Picture of elements

Question 49

Major chemical reactions?

Answer 49

Synthesis and decomposition

Question 50

pH measures concentration of?

Answer 50

Hydrogen ions

Question 51

Fat molecules contain?

Answer 51

Fatty acids and glycerol

Question 52

Major elements that make up 99.9% of body?

Answer 52

Oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, potassium, sulfur, chlorine, sodium, magnesium

Question 53

2 elements abundant in Earth's crust?

Answer 53

Oxygen and syllico

Question 54

Van Der Waals, H Bond, and Covalent are types of what?

Answer 54

Bonds

Question 55

What is an atom or molecule when it receives an electron?

Answer 55

Oxidized

Question 56

What is and atom or molecule when an electron is taken?

Answer 56

Reduced

Question 57

Nucleotides are building blocks of?

Answer 57

RNA AND DNA

Question 58

Primary structure

Answer 58

Sequence of amino acids that make up a polypeptide chain

Question 59

Secondary structure

Answer 59

Repeated patterns of folding the protein backbone

Question 60

Tertiary structure

Answer 60

Overall folding of entire polypeptide chain into 3D shape

Question 61

Quaternary structure

Answer 61

Different sub units are packed together to form overall structure

Question 62

Four bases in DNA?

Answer 62

A,T,C,G

Question 63

Four bases in RNA?

Answer 63

U,C,G,A

Question 64

Chemistry

Answer 64

Studies be composition of matter and its changes