Chemistry Review

Question 1

Particles in a gas move...

Accepted Answer

move freely with lots of energy

Question 2

Which change can be easily reversed?

Accepted Answer

Physical Change

Question 3

Alkali Metals are found in which column?

Accepted Answer

1

Question 4

Where is the atomic mass located?

Accepted Answer

bottom of the square

Question 5

Which columns are most reactive?

Accepted Answer

2 and 16

Question 6

change of state...ice to liquid, liquid to gas is a

Accepted Answer

physical change

Question 7

Two or more atoms that join together chemically with properties different than the original

Accepted Answer

Molecules

Question 8

Two or more substances join together but no chemical reaction occurs?

Accepted Answer

Mixtures

Question 9

Anything that has mass and takes up space is considered

Accepted Answer

matter

Question 10

Which particles have a negative electric charge?

Accepted Answer

Electrons

Question 11

Which group contains the most elements?

Accepted Answer

metals

Question 12

If 100 milliters of water boils at 100C, then 90 millilters of water will boil at?

Accepted Answer

100C

Question 13

Combustion is what type of change?

Accepted Answer

Chemical

Question 14

A phase change from liquid to gas

Accepted Answer

Evaporation

Question 15

How easy an element can combine with other elements.

Accepted Answer

reactivity

Question 16

A metal that can be pulled out or drawn into long wires

Accepted Answer

ductile

Question 17

chopping wood is what type of change?

Accepted Answer

Physical

Question 18

What is the best example of a pure substance?

Accepted Answer

Gold

Question 19

A material that can be hammered or rolled into thin sheets

Accepted Answer

malleable

Question 20

These substances can be easily seen and separated

Accepted Answer

heterogeneous mixture

Question 21

In an atom, the number of protons equals the number of

Accepted Answer

electrons

Question 22

How are periods on the periodic table organized?

Accepted Answer

Increasing atomic number from left to right

Question 23

The law of conservation of matter states that matter ....

Accepted Answer

Can not be created and can not be destroyed

Question 24

How many periods or rows are there in the periodic table?

Accepted Answer

7

Question 25

on a PH scale, numbers 8-14 are

Accepted Answer

Basic

Question 26

The atomic number is the number of

Accepted Answer

Protons in the nucleus of an atom

Question 27

The substance that is dissolved into a substance is called

Accepted Answer

solute

Question 28

What is not a property of metals

Accepted Answer

dull

Question 29

Contains two or more different elements that join together chemically?

Accepted Answer

Compounds

Question 30

Most metals are not

Accepted Answer

liquid at room temperature

Question 31

When a new substance is formed with different properties than the original substance it is

Accepted Answer

chemical change

Question 32

The new substance after a chemical reaction is called?

Accepted Answer

product

Question 33

How do you find the neutrons on the element square?

Accepted Answer

subtract the top number from the bottom number

Question 34

Which shows one example of a physical change and a chemical change?

Accepted Answer

freezing water and burning coal

Question 35

Two liquids have a chemical reaction and form a solid. This is called

Accepted Answer

Precipitate

Question 36

A material that can transfer heat or electricity to another object

Accepted Answer

conductivity

Question 37

The amount of space an object takes up

Accepted Answer

volume

Question 38

chemically combining 6g of hydrogen and 5g of oxygen, what will be the mass of the product?

Accepted Answer

11 grams

Question 39

lemon juice and baking soda mix and turn to a gas. What is the reactants?

Accepted Answer

baking soda and lemon juice

Question 40

The original substance before a chemical reaction is called?

Accepted Answer

reactant

Question 41

Lemonade consists of several substances that are NOT chemically combined, so lemonade is a

Accepted Answer

mixture

Question 42

What change can be easily reversed?

Accepted Answer

physical change

Question 43

Bending, crushing, breaking, chopping are all..

Accepted Answer

physical properties of matter

Question 44

What column are your halogens?

Accepted Answer

17

Question 45

What information in the periodic table indicates the number of protons in an atom

Accepted Answer

the element's atomic number

Question 46

Which is the best example of a pure substance?

Accepted Answer

gold

Question 47

Numbers on the PH scale from 0 to 6 represents?

Accepted Answer

Acid

Question 48

Which parts of the atom move around the nucleus

Accepted Answer

Electrons

Question 49

A chemical reaction that absorbs energy in the form of heat is described as

Accepted Answer

endothermic

Question 50

The smallest bits of matter are called

Accepted Answer

atoms

Question 51

CaCO represents a chemical

Accepted Answer

formula

Question 52

All solids have

Accepted Answer

has shape and volume

Question 53

Which column is your noble gasses?

Accepted Answer

Column 18

Question 54

a chemical reaction that occurs between two liquids and it forms a solid

Accepted Answer

precipitate

Question 55

Which particles in an atom are in the nucleus?

Accepted Answer

Protons and Neutrons

Question 56

If a student is chemically combining 6 g of carbon with 4 g of nitrogen, what is the product?

Accepted Answer

10

Question 57

A chemical reaction that produces heat is called?

Accepted Answer

exothermic reaction

Question 58

Anything that takes up space is called?

Accepted Answer

matter

Chemistry Review

Questions 58

Chemistry Review

Questions 58