Chemistry 2nd Semester Final Exam Prep

Question 1

What is the center of an atom called?

Accepted Answer

Nucleus

Question 2

Which element is found in all living things?

Accepted Answer

Carbon

Question 3

What do we call substances made of only one type of atom?

Accepted Answer

Elements

Question 4

What do you call a solid that forms from a solution in a chemical reaction?

Accepted Answer

Precipitate

Question 5

Which state of matter is water at room temperature?

Accepted Answer

Liquid

Question 6

Which subatomic particle has no charge?

Accepted Answer

Neutron

Question 7

Which of the following is a compound?

Accepted Answer

CO2

Question 8

Which of these is a noble gas?

Accepted Answer

Helium

Question 9

What is the symbol for gold?

Accepted Answer

Au

Question 10

What is the periodic table?

Accepted Answer

A chart of elements

Question 11

What is the pH of pure water?

Accepted Answer

7

Question 12

Which element is needed for things to burn?

Accepted Answer

Oxygen

Question 13

What tool is used to measure temperature in chemistry?

Accepted Answer

Thermometer

Question 14

Which of these is used in pencils?

Accepted Answer

Graphite

Question 15

What is the chemical symbol for oxygen?

Accepted Answer

O

Question 16

Which one is a metal?

Accepted Answer

Sodium

Question 17

How many elements are in H2O?

Accepted Answer

2

Question 18

What is table salt made of?

Accepted Answer

Sodium and Chlorine

Question 19

Which of these is a liquid at room temperature?

Accepted Answer

Mercury

Question 20

Which of these is NOT a chemical change?

Accepted Answer

Melting ice

Question 21

What is rust mainly made of?

Accepted Answer

Iron Oxide

Question 22

Which gas do humans need to breathe?

Accepted Answer

Oxygen

Question 23

Which unit is used to measure mass?

Accepted Answer

Gram

Question 24

What is the symbol for water?

Accepted Answer

H2O

Question 25

Which particle has a negative charge?

Accepted Answer

Electron

Question 26

What is a solution made of?

Accepted Answer

Solute and solvent

Question 27

What does H stand for on the periodic table?

Accepted Answer

Helium

Question 28

Which of these is NOT a state of matter?

Accepted Answer

Flame

Question 29

What is the chemical formula for carbon dioxide?

Accepted Answer

CO2

Question 30

Which gas makes balloons float?

Accepted Answer

Helium

Chemistry 2nd Semester Final Exam Prep

Questions 30

Chemistry 2nd Semester Final Exam Prep

Questions 30