Exam 2

Question 1

Atomic Mass of Proton

Answer 1

1.673 x 10⁻²⁴ g

Question 2

Atomic Mass of Neutron

Answer 2

1.675 x 10⁻²⁴ g

Question 3

Additions to Dalton’s Atom Model

Answer 3

1. Atoms are composed of sub atomic particles
2. not all atoms of a specific element have the same mass.
3. atoms can be decomposed under special circumstances.

Question 4

Atomic number = ?

Answer 4

Number of protons in nucleus

Question 5

Atomic Mass Unit (AMU) conversion

Answer 5

1 protons = 1 amu

1 neutron = 1 amu

Question 6

Atomic mass = ?

Answer 6

Neutron + Proton

Question 7

1 amu = _______g?

Answer 7

1.6606 x 10⁻²⁴g

Question 8

Common Metal Ions that have more than one type of Cation. Charge

Answer 8

Copper    Cu
mercury   Hg
iron          Fe
tin           Sn
lead        Pb
arsenic    As
titanium   Ti

Question 9

Dalton’s atomic model is ?

Answer 9

1. Elements are composed of minute, invisibles particles called Atoms.
2. Atoms of the same element are alike in mass and size.
3. Atoms of different elements have different masses and sizes.
4. Chemical compounds are formed by the union of two or more atoms of different elements.
5. Atoms combine to form compounds in simple numerical ratios, such as 1 to 1, 1 to 2, 2 to 3, and so on.
6. Atoms of two elements may combine in different ratios to form more than one compound.

Question 10

Mass of electron =

Answer 10

9.110 x 10⁻²⁸g

Question 11

Prefix for naming covalent compounds, two non metals.

Answer 11

1 mono
2 di
3 tri
4 tetra
5 Penta
6 hexa
7 hepta
8 octa
9 nona
10 deca