Final

Question 1

What is Democritus credited with/

Answer 1

the idea that matter is made up of indivisible particles too small to see

Question 2

what subatomic particle have no net charge?

Answer 2

neutrons

Question 3

inside of an atom between the nucleus and an electron is

Answer 3

empty space

Question 4

nearly all the mass of the atom is located in the

Answer 4

nucleus

Question 5

an atom has 10 protons 12 neutrons, and 11 electrons. what is the approximate atomic mass?

Answer 5

22 amu

Question 6

how many elements make up water?

Answer 6

2

Question 7

what is the defining characteristic of an elements

Answer 7

its matter that can’t be made simpler

Question 8

___must have definite ratio of different kinds of atoms inside of them?

Answer 8

compounds

Question 9

the copper on the statue of liberty used to look much like a new penny. The changer that took place to make it green was a ____ change

Answer 9

chemical

Question 10

A____ is the smallest unit of an compound.

Answer 10

molecule

Question 11

the subatomic particles located in the nucleus of an atom are….

Answer 11

neutrons and protons

Question 12

A ___ change takes place when you separate salt from salt water by boiling off the water.

Answer 12

physical

Question 13

What subatomic particle have a mass of 1 amu?

Answer 13

neutrons and protons

Question 14

According to curie, which could affect the rate at which radioactive atoms shot out high energy particles?

Answer 14

the amount of the sample

Question 15

Which of the following compounds is ionic?
a. SO3 B. NaCL c. H2O d, none of these

Answer 15

B. NaCL

Question 16

The name of the following compound K2S is

Answer 16

Dipotassium monosulfide

Question 17

What is the right diagram for H2O?

Answer 17

..
H-O-H
..

Question 18

The ____ bonds in water give hydrogen_____.

Answer 18

polar covalent/ positive charge

Question 18

With the exception of hydrogen, when atoms bond they generally want ___electrons in their highest energy to become stable because they resemble____.

Answer 18

8/noble gasses

Question 19

The name of the following compound CCL4 is:

Answer 19

Carbon tetrachloride

Question 20

Valence electrons are electrons in the____.

Answer 20

outer most energy level

Question 21

the way in which an atoms bonds with another atom is directly related to the number and location of the______.

Answer 21

electrons

Question 22

In an ionic bond metals___.

Answer 22

give electrons to nonmetals

Question 23

Covalent bonds result from the___ of electrons while ionic bonds result from the___ of electrons.

Answer 23

sharing/transfer

Question 24

Which of the following elements is most likely to form a positive cation when bonding. a. Flourine b. Chlorine c. Potassium d. Oxygen

Answer 24

c. Potassium

Question 25

as the atomic radius increases electronegativity_____.

Answer 25

decreases

Question 26

What is the correct diagram for a neutral aluminum atom as an LDD.

Answer 26

with 3 valence electrons around it

Question 26

when a fluorine and chlorine atom bond they will form a____.

Answer 26

polar covalent bond

Question 27

This element is in group 5, period 6

Answer 27

tantalum

Question 28

what is true about alkaline earth metals.

Answer 28

they are all reactive, they are all metals, they form +2 ions

Question 29

which of these elements is the most similar to calcium a. barium b. bromine c. aluminum d. potassium

Answer 29

A. barium

Question 30

the number of what subatomic particles determine what element you have?

Answer 30

protons

Question 31

what is the symbol of the element with an atomic number .

Answer 31

Be

Question 32

how many neutrons do all isotopes of carbon have?

Answer 32

impossible to figure out even with periodic table

Question 33

most of the periodic table can be classified as

Answer 33

metals

Question 34

what are the physical properties of Yttrium.

Answer 34

shiny, malleable, good conducter

Question 35

a positive ion is called a

Answer 35

cation

Question 36

the isotopes of the same element differ in

Answer 36

neutrons and mass number

Question 37

bromine tends to form a__ ion with_____ electrons

Answer 37

-1,36

Question 38

what did Lavoisier observe in his elements involving steel wool burning?

Answer 38

that burning steel wool in a closed container kept the total mass the same

Question 39

what do neon and carbon have in common?

Answer 39

NOTHING

Question 40

The most reactive nonmetals are in what group

Answer 40

group 17

Question 41

1 cm3 is the same thing as

Answer 41

1 mL

Question 42

a centimeter is approximately

Answer 42

the distance across your pinky nail

Question 43

which of these is NOT a volume unit?

Answer 43

mL3

Question 44

a cube measures 3 cm on each side. What is the area of one face of the cube?

Answer 44

9 cm2

Question 45

a certain cube with a volume of 8cm3 has a mass 24 g. its density would be____ g/cm3

Answer 45

3

Question 46

Would a 3 g/cm3 sink or float in water?

Answer 46

sink

Question 47

a watt is a measurement for power in the metric system. Which of the following statements would be true? a. 100 watts = 1 centiwatts b. 1 watt = 1000 milliwatts c. 1 kilowatt = 10 watts d. none of the above

Answer 47

B. 1 watt = 1000 milliwatts

Question 48

Copper has a density of about 9 g/cm3. What would the mass of 18 cm3 be?

Answer 48

162 g

Question 49

How much time will it take a car traveling at 20 miles/hr to travel 100 miles?

Answer 49

5 hours.

Question 50

1 chain is a unit of length equal 66 ft. If you were to convert 100 ft chains which of the following would be the correct conversion factor to multiply by? a. 1 chain/66 ft b. 1 ft/66chain c. 66 chain/1 ft d. 66 ft/1 chain

Answer 50

a. 1 chain/ 66 ft

Question 51

A 1 liter bottle of water has_____ density compared to a 2 L bottle of water. a. less b. more c. the same d. not enough information

Answer 51

c. the same

Question 52

A cube measures 3 cm on each side. What is the volume of the cube?

Answer 52

27 cm3

Question 53

the width of the classroom would best be estimated as

Answer 53

1000 centimeters

Question 54

A joule is a measurement for energy in the metric system. Which of the following statements would be true? a. 1000 J = 1 mJ b. 100 cJ = 1 J c. 1 kj = 10000 J d. none of the above

Answer 54

100 cJ = 1 J

Question 55

a certain cube with a volume of 24 cm3 has a mass of 8 g. It would______ in water which has a density of 1 g/mL

Answer 55

float