Texas Chemistry EOC

If the pH of a substance is 5 then then substance may have been contaminated by a

• Acid
• Base 
• neutral substance

In a chemical reaction between an acid and base the pH of the product solution will be

• 7
• 0
• 14
• 6

An increase in H₃O⁺ will cause the pH to 

• increase
• decrease
• stay the same

Both Acids and Bases conduct electricity

• True
• False

Bases have the following properties except

• bitter taste
• feels slippery
• low pH
• turns red litmus paper blue

The following properties, sour taste, turns blue litmus paper red, and a low pH number are properties of 

• Acid
• Base
• Neutral substance

An enzyme is an example of 

• catalyst
• neutralizer
• inhibitor
• indicator

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

In order to decrease the time it takes for a denture tablet and water to react the following could be done

• use less water
• use a whole tablet
• increase the temperature of water
• use a smaller amount of tablet

Tags

NGSS.MS-PS1-4

If a chemical reaction is exothermic than it will 

• feel warmer and release energy
• feel warmer and absorb energy
• feel cold and release energy
• feel cold and absorb energy

Tags

NGSS.MS-PS1-4

When heat is absorbed in a chemical reaction, this is a 

• endothermic reaction
• exothermic reaction
• neutralization reaction

Tags

NGSS.HS-PS1-4