Chap 3 science vocab

Question 1

chemical bond

Answer 1

the combining ofatoms to fomr molecules or compounds

Question 2

ionic compound

Answer 2

a compound made of oppisitly charged ions

Question 3

covalent bond

Answer 3

a chemical compound formed by the sharing of electrons

Question 4

acid

Answer 4

any compound that increases the number of hydronium ions when dissolved in water

Question 5

indicator

Answer 5

a compound that can reversibly change color depending on conditions such as pH

Question 6

base

Answer 6

any compound that increases the number of hydroxide ions when dissolved in water

Question 7

neutralization reaction

Answer 7

the reaction of an acid and a base to form a neutral solution of watewr and a salt

Question 8

pH

Answer 8

a value that is used to express the acidity or basicity of a system

Question 9

salt

Answer 9

an ionic compound that forms when a metal atom replaces the hydrogen of an acid

Question 10

organic compound

Answer 10

a covalantly bonded compound that contains carbon

Question 11

hydrocarbon

Answer 11

an organic compound composed only of carbon and hydrogen

Question 12

carbohydrate

Answer 12

a class of energy giving nutrients that includes sugars, starches and fiber composed of one or more simple sugars bonded together

Question 13

lipid

Answer 13

a type of biochemical that does not dissolve in water; fats and steroids are lipids

Question 14

protein

Answer 14

a molecule that isa made up of amino acids and that is

Question 15

nucleic acid

Answer 15

a molecule made up of sub units called nucleotides