Chemistry Chapter 2 BJU

Question 1

Dry ice has a temperature of 196K. What is the temperature of dry ice on the Celsius scale?

Accepted Answer

-77

Question 2

How many atoms of aluminum are present in 2Al2(SO4)3

Accepted Answer

4

Question 3

A charged atom is called a(n)

Accepted Answer

ion

Question 4

A block of ice has a temperature of -14 oC. What is its temperature in Kelvins?

Accepted Answer

259.15

Question 5

Hydrogen peroxide (H2O2) is a

Accepted Answer

compound

Question 6

The temperature outside is 87 oF. What is that temperature in degrees Celsius

Accepted Answer

31

Question 7

Elements have been named for which of the following?

Accepted Answer

all of these

Question 8

How many atoms of oxygen are there in five molecules of penicilin G(C16H18N2O4S)?

Accepted Answer

20

Question 9

Which of the following is not one of the six common forms of energy?

Accepted Answer

laser

Question 10

How many atoms of sulfur are present in 2Al2(SO4)3

Accepted Answer

6

Question 11

The freezing point of nitrogen is -210 oC. What would that temperature be in Kelvins

Accepted Answer

63K

Question 12

pure water is a

Accepted Answer

compound

Question 13

In the chemical formula 10Al(C2H3O2)3, the numeral 10 is a

Accepted Answer

coefficient

Question 14

The purpose of a toaster is to convert ___ energy to ___ energy

Accepted Answer

electromagnetic/thermal

Question 15

The two temperature sales most commonly used in chemistry are

Accepted Answer

Celsius and Kelvin

Question 16

Which of the following has the greatest amount of thermal energy

Accepted Answer

1L water at 98 oC

Question 17

As entropy ____, the randomness in a system increases

Accepted Answer

increases

Question 18

The temperature of the sun is 5776 K. What would this temperature be in degrees Fahrenheit

Accepted Answer

9937

Question 19

What unit is used to measure both energy and work?

Accepted Answer

joule

Question 20

In the formula Mg(OH)2, the numeral 2 is called a

Accepted Answer

subscript

Question 21

______ are the smallest basic particles of an element

Accepted Answer

Atoms

Question 22

The measure of randomness or disorder in a system is known as

Accepted Answer

entropy

Question 23

How many hydrogen atoms are in this chemical formula 2H2O?

Accepted Answer

4

Question 24

How many atoms of oxygen are present in 2Al2(SO4)3

Accepted Answer

24

Question 25

Phosphourus (P4) is a

Accepted Answer

polyatomic element

Chemistry Chapter 2 BJU

Questions 25

Chemistry Chapter 2 BJU

Questions 25