Chemical Interactions 1&2

A chemical reaction is: 

• A process where starting substances change into new substances 
• A form of matter with a unique composition 
• The result of a change of energy in the particles of a subsstance 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Water is a: 

• Substance 
• Element 
• Both (substance and element)

Oxygen is a:

• Substance 
• Element 
• Both (substance and element) 

CO₂  Contains how many elements? 

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

NaCl contains how many elements? 

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Which is NOT a rule for symbols of the periodic table? 

• 1st letter is always capital 
• contains 1 or 2 letters 
• always the first 1 or 2 letters of the English element name 
• 2nd letter is always lowercase 

Mendeleyev first organized the Periodic Table in one row according to: 

• Color 
• Mass 
• Physical Properties 
• Chemical Properties 

You mix sand and water, the sand settles on the bottom of the glass. Has a chemical reaction occurred?

• Yes
• No

Tags

NGSS.MS-PS1-2

Which is NOT a label for substances:

• Chemical Name 
• Chemical Formula 
• Common Name 
• Common Formula 

You mix two substances and the container you mixed them in gets warm. Has a chemical reaction occurred? 

• Yes 
• No

Tags

NGSS.MS-PS1-2