Chemistry Review

Chemistry Test Review

Fill in the Blank

How many electrons does Iodine have?

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How many neutrons does Titanium have?

Fill in the Blank

How many protons does Helium have?

Fill in the Blank

How many electrons does sulfur have?

Multiple Choice

Choose the one that is a chemical property

• Magnetism

• Size

• Color

• Reactivity with water

Multiple Choice

Physical or Chemical change:
milk sours

• physical change
• chemical change

Multiple Choice

Dissolving a solid into a liquid is a ___.

• physical change

• chemical change

Multiple Choice

The ability to burn is a ___ property.

• physical

• chemical

• conservitive

• reversed

Multiple Choice

What type of reaction occurs in a hand warmer

• exothermic
• endothermic

Multiple Choice

You freeze juice to make ice pops.

• exothermic

• endothermic

Multiple Choice

Ice cubes in your glass of soda melt.

• endothermic

• exothermic

Multiple Choice

_____ reactions usually feel hot!

• endothermic

• exothermic

Multiple Choice

____ reactions usually feel cold.

• endothermic

• exothermic

Multiple Choice

The Law of Conservation of matter states that the total amount of matter ______________ after it undergoes change.

• disappears
• stays the same
• weighs less
• explodes

Multiple Choice

An oreo cookie has a mass of 20 grams. It gets crushed into crumbs for a recipe. What is the mass of the crumbs?

• 15 grams

• 25 grams

• 20 grams

Multiple Choice

Which of these is only a molecule and not a compound?

• a

• b

• c

• d

Multiple Choice

Molecules and compounds are created when multiple atoms bond together, but how are they different?

• Compounds have to have atoms from different elements bonded together

• Molecules have to have atoms from different elements bonded together

• They are the same and there is no difference

• Molecules are building blocks of compounds

Multiple Choice

Which of the following is the most accurate statement?

• everything is both a molecule and a compound

• nothing can be both a molecule and a compound

• all compounds are also molecules

• All molecules are also compounds

Multiple Select

What is the picture displayed?

• atom

• element

• molecule

• compound

Multiple Choice

This picture represents which of the following?

• element
• compound
• mixture

Multiple Choice

The air is a _________. 

• element 
• mixture 
• compound 
• energy 

Multiple Choice

When elements form mixtures, the elements keep their original properties. 

• True
• False

Multiple Choice

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

• Compound

• Element

• Mixture

• None of the Above

Multiple Choice

Which of the following represents an element?

• H₂O

• H₂

• NaCl

• CaCO₃

Multiple Choice

Carbon Dioxide is a ______ 

• compound 
• element 
• mixtures 
• Battle of Bunker Hill 

Multiple Choice

The elements that touch the zigzag line on the Periodic Table are called

• metals

• nonmetals

• metalloids

• gasses

Multiple Choice

a row on the Periodic Table of Elements

• family

• period

• row

• isotope

Multiple Choice

a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group

• family

• period

• row

• isotope

Multiple Choice

Beryllium is in group number______.

• Group 2

• Group 3

• Group 4

• Group 7

Multiple Choice

What group does this element belong to?

• 1

• 2

• 17

• 18

Multiple Choice

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

Multiple Choice

How many valence electrons?

• 2

• 3

• 5

• 10

Multiple Choice

How many Valance electrons does Iodine Have?

• 6

• 16

• 7

• 17

Multiple Choice

Which Bohr model represents Neon?

Multiple Choice

What is the atomic number of this atom?

• 2

• 4

• 6

• none of the above

Multiple Choice

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Multiple Choice

What is the name of this element?

• Helium
• Hydrogen
• Argon
• Silver

Multiple Choice

I have 33 protons , 33 electrons and 42 neutrons...

What element am I?

• Li - Lithium

• As - Arsenic

• Mo - Molybdenum

• Does not exist

Multiple Choice

I have 7 protons , 7 electrons and 5 neutrons...

What element am I?

• B - Boron

• N - Nitrogen

• Mg - Magnesium

• Does not exist

Multiple Choice

I have 11 protons, 11 electrons and 12 neutrons...

What element am I?

• B - Boron

• Na - Sodium

• Mg - Magnesium

• Does not exist

Fill in the Blank

I have 4 electron shells and am in the Alkali Metal Group (#1)...Which element am I?

Fill in the Blank

I have two electron shells and 8 neutrons.,,,Which element am I?

Fill in the Blank

I have a full valence electron shell and 18 electrons....Which element am I?

Fill in the Blank

I have 4 valence electrons and 50 protons....Which element am I?

Fill in the Blank

I have three electron shells and 3 valence electrons....Which element am I?

Multiple Choice

one of several forms of a single element, which contains the same number of protons, but different numbers of neutrons

• isotope

• ion

• orbital

• nucleus

Multiple Choice

Why do all bonds form?

• so the number of protons equals the number of electrons

• so an atom can become unstable

• to fill the outermost energy level

Multiple Choice

How are ionic bonds formed?

• Transfer of electrons

• Sharing of electrons

Multiple Choice

How are covalent bonds formed?

• Sharing of electrons

• Transfer of electrons

Multiple Choice

Atoms that gain electrons become...

• negatively charged (anion)

• positively charged (cation)

• remain neutrally charged

• 21