Biology: Basic Chemistry

Question 1

elements

Answer 1

single substances that can not be broken down into simpler substances

Question 2

atom

Answer 2

smallest particle of an element that still has all of the properties of that element

Question 3

ion

Answer 3

an atom with a positive or negative charge

Question 4

symbol

Answer 4

letter or letters representing an element

Question 5

compound

Answer 5

chemical combination of two or more elements

Question 6

molecule

Answer 6

smallest part of a compound which still has all of the properties of that compound

Question 7

what are atoms made of

Answer 7

protons +
neutrons
electrons -

Question 8

how many does the 1st, 2nd, and 3rd electron shell hold

Answer 8

2
8
8

Question 9

valance shell

Answer 9

outer most electron shell of an Atom

Question 10

Quarks

Answer 10

Make up of protons and neutrons

Question 11

Atomic number

Answer 11

Number of protons in elements

Question 12

Atomic mass

Answer 12

The number of protons plus the number of neutrons in an element

Question 13

Number of neutrons

Answer 13

Subtract the atomic number from the atomic mass

Question 14

Isotope

Answer 14

And Adam that differs only and it’s number of neutrons

Question 15

Goal of all atoms

Answer 15

Stable out your energy levels

leads to bonding of atoms

Question 16

to ways bonding can happen

Answer 16

sharing of valence electrons

transfer of valence electrons

Question 17

Covalent bonding

Answer 17

When one or more electrons are shared between Atoms

Question 18

Ionic bonding

Answer 18

When one or more electrons are transferred between atoms

Question 19

Chemical formula

Answer 19

Each element is represented by chemical symbol and the number of atoms is shown subscripts

Question 20

Structural formula

Answer 20

Shown the chemical symbol of each element and how they bonded to one another

Question 21

Law of conservation of mass

Answer 21

States that mass can neither be created or destroyed

Question 22

Benedicts solution

Answer 22

indicator for glucose

initial color is blue and final color if sugar is present is orange or red

Question 23

lugols iodine

Answer 23

indicator for starch

initial color is amber and the final color if starch is present is purple

Question 24

buirets solution

Answer 24

indicator for protein

its initial color is blue and the final color is purple

Question 25

litmus paper

Answer 25

shows acid or base

Question 26

pH paper

Answer 26

shows actual pH of acid or base