Chemistry Test Chapter 5

Question 1

What does 1 millimeter of mercury equal?

Answer 1

1 torr

Question 2

What is number of protons in an atom?

Answer 2

Atomic number

Question 3

What does the standard atmosphere (atm) equal?

Answer 3

760 torr

760 mmHg

Question 4

What isotope is the atomic mass unit defined relative to?

Answer 4

Carbon -12 atom

Question 5

Which step of the scientific method involves thinking about nature to develop an idea about how something works?

Answer 5

Hypothesizing

Question 6

What is a microsecond?

Answer 6

One millionth of a second 0.0000001

Question 7

What is the standard temperature and pressure ( stp)

Answer 7

1atm

273k

Question 8

How many atoms are in exactly one mole of atoms?

Answer 8

6.02•10^23

Avogadro’s number

Question 9

What equals 0 K?

Answer 9

Absolute zero

= -273 degrees C

Question 10

How do you measure atmospheric pressure?

Answer 10

Barometer

Aneroid barometer

Question 11

What is a barameter used for?

Answer 11

Measure atmospheric pressure

Question 12

Define pressure

Answer 12

A push per unit

Pressure=force/area

Question 13

What happens in a solid state of matter?

Answer 13

Molecules held rigidly and compact

Question 14

Define precision

Answer 14

Consistency of measurement over and over again

Question 15

What is or define Avogadro’s number?

Answer 15

6.02•10^23 particles/molecules

Question 16

What is the formula of copper chloride?

Answer 16

CuCl

Question 17

Formula for combination reaction

Answer 17

A+B=AB

Question 18

Formula for decomposition reaction

Answer 18

AB=A+B

Question 19

Formula for double-displacement reaction

Answer 19

AB+CD=AD+CB

Question 20

Formula for single-displacement reaction

Answer 20

A+BC=B+AC

Question 21

What is the molar mass of diborane?

Answer 21

B2H6

Question 22

Which law implies that at constant temperature and pressure the molar volume of an ideal gas is constant?

Answer 22

Charles law

Question 23

How many significant figures does number 68,080 have?

Answer 23

4 sig figs

Question 24

Know how to find partial pressure of hydrogen

Answer 24

Total minus water vapor pressure

Question 25

What is theoretical behavior of an ideal gas as it is cooked to absolute zero (0 K) at constant pressure?

Answer 25

The gas molecules get close enough to attract each other, liquefy, then solidify; no substance exists as a gas at 0 k. Directly proportional- constant pressure and absolute temperature.

Question 26

What is kinetic theory of matter

Answer 26

Gas molecules are continually moving about and colliding with each other and with surfaces.

Question 27

Know the properties of gold

Answer 27

Au

Question 28

What does 1.5 m equal?

Answer 28

``` Nano one billionth Micro one millionth Milli one thousandth Centi one hundredth Deci one tenth Kilo one thousand Mega one million ```

Question 29

Name example of a chemical change

Answer 29

Fire burning something

Question 30

What is open end manometer as shown in diagram and pressure of gas?

Answer 30

Add numbers if higher Mercury is on the open to air side | Subtract numbers if higher on side connected to gas

Question 31

See question 48 & 49

Answer 31

Q

Question 32

Smallest particle for element broken down without changing identity of element

Answer 32

Atom Proton positive Electron negative

Question 33

Know about gold (III) ion (Au^3+)

Answer 33

Ok

Question 34

Know examples of a chemical change

Answer 34

Distinct change in color Formation of precipitate Formation of gas

Question 35

Open end manometer

Answer 35

Ok

Question 36

Theoretical behavior of ideal gas

Answer 36

A gas that exactly obeys the assumptions of the kinetic theory

Question 37

Know kinetic theory matter

Answer 37

Ok

Question 38

What does 1.5 m equal?

Answer 38

A

Question 39

What is a physical property?

Answer 39

A change that does not change the composition of a substance

Question 40

Know empirical formula for beta carotene

Answer 40

Simplest ratio of atoms

Question 41

Know 4 basic laws

Answer 41

``` Ideal gas law Boyle Charles Combined Daltons ```

Question 42

What does 5300 g equal?

Answer 42

Ok

Question 43

Know how to balance equations

Answer 43

Q

Question 44

What is symbol Pb?

Answer 44

Lead

Question 45

Know molecular process when she and water mix

Answer 45

Q

Question 46

Quantity of ratio to mass to volume

Answer 46

Density

Question 47

What is silicon symbol

Answer 47

Si

Question 48

Know diffusion of gas

Answer 48

Total minus water vapor pressure

Question 49

What is CaCO 3

Answer 49

Calcium carbonate

Question 50

What is HF

Answer 50

Helium fluoride

Question 51

What is negatively charged subatomic particles in an atom

Answer 51

Electron