Unit 1 Test

Question 1

What is the density formula?

Answer 1

mass/volume

Question 2

What is the volume formula?

Answer 2

mass/density

Question 3

What is an intensive property?

Answer 3

a property of something that does NOT change when the size of it changes

Question 4

What is an extensive property?

Answer 4

a property of something that DOES change when the size of it changes

Question 5

What is the difference between a theory and a law?

Answer 5

Theory-Why something happens

Law-What happens

Question 6

How do you convert celsius to fahrenheit?

Answer 6

(temp C)•(9/5)+32

Question 7

How do you convert fahrenheit to celsius?

Answer 7

((temp F)-32) / (9/5)

Question 8

how do you find the # of neutrons in an atom?

Answer 8

atomic mass-atomic #

Question 9

What are 2 conclusions from Rutherfords experiment?

Answer 9

1. An atom must have a positively charged center that contains most of its mass
2. An atom are mostly empty space

Question 10

What are the common periodic table names for groups 1,2,17 and 18?

Answer 10

1. Alkali Metals
2. Alkaline Earth Metals
3. Halogens
4. Noble Gases

Question 11

Why is JJ Thompson significant?

Answer 11

He discovered the electron

Question 12

Why is Marie Curie significant?

Answer 12

She described radioactivity

Question 13

Why is John Dalton significant?

Answer 13

His atomic theory

Question 14

Why is James Chadwick significant?

Answer 14

He discovered neutrons

Question 15

Why is Millikan significant?

Answer 15

He did the oil drop experiement and discovered the charge of electrons

Question 16

Is density intensive or extensive?

Answer 16

intensive

Question 17

How do you convert between inches and centimeters?

Answer 17

1 inch=2.54 cm

Question 18

how many ml in 5000 ul?

Answer 18

5 ml

Question 19

What is the percent error formula?

Answer 19

actual-theoretical/actual •100

Question 20

What is the law of conservation of mass?

Answer 20

mass is neither created nor destroyed

Question 21

What is the Law of definite proportions?

Answer 21

a given compound always contains exactly the same porportion of elements by mass

Question 22

What is the law of multiple porportions?

Answer 22

A law stating that when 2 elements form a series of compounds, the ratios of the masses of the second element that combine with 1 gram of the first element can always be reduced to small whole numbers

Question 23

in what situation will the number of protons and electrons differ when finding information on an atom?

Answer 23

The atom is charged

Question 24

How do you write nuclear symbols of elements?

Answer 24

Mass

Atomic# element

Question 25

Which elements are metalloids?

Answer 25

B, S, Ge, As, Sb, Te

Question 26

What type of compound when naming do you put the prefix before the first element?

Answer 26

Covalent

Question 27

What type of compound when naming do you need to keep track of charges?

Answer 27

Ionic

Question 28

What do you name an acid without oxygen in it?

Answer 28

hydro-(anion)-ic acid

Question 29

How do you name an acid that has oxygen and ends in -ite?

Answer 29

(root)ous acid

Question 30

How do you name an acid with oxygen ending in -ate?

Answer 30

(root)ic acid

Question 31

When do you use the latin version of a metal in coordination chemistry?

Answer 31

When the ion is negative