Chemical Reactions

Which is the name of the kind of solid substance formed in this figure?  

• aqueous 
• precipitate
• acid
• synthesis 

Tags

NGSS.MS-PS1-2

Describes the number of molecules in a compound and is used to balance a chemical reaction. 

• coefficient 
• subscript
• superscript
• SI unit

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Provides evidence that a chemical reaction has occurred. 

• dissolving 
• melting
• formation of a gas
• bending

Tags

NGSS.MS-PS1-2

A compound is reacted and forms two new substances. What type of reaction is this? 

• combustion 
• synthesis 
• decomposition 
• single replacement 

Tags

NGSS.MS-PS1-2

Describes the number of atoms in a compound of each element. 

• coefficient 
• superscript 
• subscript 
• SI unit 

A chemical change is different than a physical change because in a chemical change

• chemicals are used

• molecules do not physically touch

• a new substance is formed and in a physical no new substance is formed

• the change can be seen but in a physical change it cannot

Tags

NGSS.MS-PS1-2

Which of the following 2 are chemical reactions?

• sugar dissolving in water

• water turning into steam

• burning wood

• mixing baking soda and vinegar

• tearing paper

Tags

NGSS.MS-PS1-2

How many Carbons are present on the reactant side?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many Hydrogens are on the product side of this chemical equation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

How many Oxygens are on the product side of this chemical equation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5