Study Guide given

Question 1

A chemical compound always contains the same proportions

Answer 1

Law of Definite Proportions

Question 2

1. each element is composed of extremely small particles calls atoms.
2. atoms of one element cannot be converted into atoms of another element by chemical reactions.
3. atoms of an element are identical in mass and other properties and are different from atoms of any other elements.
4. compounds result from the chemical combination of a specific ratio of different elements.

Answer 2

Atomic Theory

Question 3

Positive sphere of matter with negative electrons embedded in it, say it resembled some english dessert.

Answer 3

Plum pudding model

Question 4

mass is neither destroyed nor created in chemical reaction.
The mass of any one element of a reaction will equal the mass of that element at the end of the reaction.

Answer 4

Conservation of mass

Question 5

American physicist at the university of chicago
measured the charge of electrons by observing the movement of tiny droplets of oil.

Answer 5

Robert Millikan

Question 6

Scottish mathematician and physicist, established temperature scale for absolute zero.

Answer 6

Lord William Thomas Kelvin

Question 7

Si temperature scale, has an absolute zero

Answer 7

The Kelvin (K)

Question 8

New zealand physicist, solved the dilemna of atomic structure, discovered 3 types of radiation.

Answer 8

Rutherford

Question 9

Carry 2 fundamental units of charged particles have essentially the same mass helium atoms.

Answer 9

alpha ray

Question 10

are negatively charged particles produced by changes occurring in the nuclei of radioactive elements

Answer 10

beta rays

Question 11

are not particles but high penetrating power electro magnetic radiation

Answer 11

gamma rays

Question 12

Father of modern chemistry, french nobleman, disproved the theory of phlogistan using elements burned in a vacuum, discovered the law of conservation.

Answer 12

Antonine Lavoisier

Question 13

Discovered radiation with Henri Becquerel, won noble prize, concluded uranium atoms were radioactive.

Answer 13

Madame Curie

Question 14

Discovered that a compound of uranium spontaneously emits high-radiation, worked with Madame Curie.

Answer 14

Henri Becquerel

Question 15

Solids at room temperature, metallic luster, malleable and ductible, good conductors of heat and energy.

Answer 15

Metals

Question 16

gases or solids at room temperature, variety of color and appearance, brittle solids, insulators (poor conductors).

Answer 16

Non-metals

Question 17

intermediate in properties between metals and non metals, solids in room temperature, many have more than one structure (one metallic, the other non-metallic), some are semi-conductors.

Answer 17

Metalloids