Chemical Properties & Interactions

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 

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 

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

• Yes
• No

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

NGSS.MS-PS1-4

NaCO₃ contains how many elements?

• 1
• 2
• 3
• 6

Tags

NGSS.MS-PS1-1

Ba₂NaNbO₃ contains how many elements? 

• 7
• 4
• 5
• 6

Which element is represented by: Co

• Carbon 
• Copper 
• Chromium
• Cobalt

Which element is represented by: B

• Beryllium
• Boron 
• Bismuth 
• Barium