Terms

Question 1

Law of Multiple proportions

Answer 1

Daltons theory of: if two elements A and B combine to form more than one compound, the masses of B that combine wi h a given mass of A create a ratio of small whole numbers.

Question 2

Plum pudding theory

Answer 2

The electrons of an atom are spread out through a positive field like raisins in pudding.

Question 3

Law of constant composition

Answer 3

Daltons theory that: the total mass of materials present after a chemical reaction is the same as the total mass present before the reaction.

Question 4

Nuclear model

Answer 4

Ruthefords theory that: all positive charge of an atom resides in the extremely small and dense nucleus. While the negative electrons fly randomly around the nucleus. Most of the atom is empty space.

Question 5

Chemistry

Answer 5

The study of matter and the changes the matter undergoes.

Question 6

Chemists do what 3 fundamental things?

Answer 6

1. Make new types of matter; materials,substances, or combination of substances with desired properties.
2. Measure the properties of matter.
3. Develop models that explain or predict the properties of matter.