Chemical Reactions Introduction

The substances that are present before a reaction are the...

• reactants
• products
• both of these
• neither of these

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

___________________ are the elements or compounds that are formed in a chemical
reaction.

• Polymers
• Bonds
• Reactants
• Products

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NGSS.MS-PS1-5

A change in which NEW substances are formed.

• Chemical change
• Physical change
• Casual change
• Formal change

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Compounds break down into simpler substances in this type of reaction.....

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1

Name the ionic compound: MgSO₄

• magnesium sulfate

• magnesium oxide

• magnesium sulfide

• magnesium sulfur oxide

Name the ionic compound: NH₄NO₃

• ammonium nitrite

• ammonia nitride

• ammonium nitrate

• ammonia nitride

Determine the formula of this covalent compound: chlorine dioxide

• ClO₂

• Cl₂O

• ClO

• 2ClO

Tags

NGSS.MS-PS1-1

Which of the following is a chemical change rather than a physical change 

• boiling water at 100 C
• chopping up a piece of wood. 
• cooking a cake 
• ice carbon dioxide sublimating to gas 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The only way you can be certain that a chemical reaction has occured is by? 

• Light has been emitted 
• a colour change has occurred 
• bubbles appear 
• identifying one or more new chemical products 

Tags

NGSS.MS-PS1-2