Acids, Bases, Chemical Reactions

This piece of pH paper has been dipped into:

• An acid
• A base
• A pH-neutral substance
• A buffer

pH stands for:

• Potency of hydrogen
• Plurality of hydrogen
• Potential of hydrogen
• Pleurisy of hydrogen

Burning in the presence of oxygen is called...

• Displacement

• Synthesis

• Decomposition

• Combustion

Tags

NGSS.HS-PS1-4

What might happen if you mixed a strong acid with an equally strong base?

• explosive chemical reaction
• a pH neutral substance
• the base would destroy the acid
• the acid would destroy the base

Complete the general reaction

Metal+acid ---------> Salt + -----------

• Nitrogen

• Hydrogen

• water

• Sodium Chloride

Tags

NGSS.MS-PS1-5

Mg + H₂SO₄ ------------> _________ + H₂

• MgH₂

• MgS + 2O₂

• MgSO₄

• Mg(SO₄)₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Na + HNO₃ ------------>

• Na + H₂O + O₂

• NaH + NO₂

• Na(NO₃)₂ + H₂

• NaNO₃ + H₂

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-7

How to test the Hydrogen gas formed in a test???

• It burn the lighted splint with pop sound

• It turns lime water milky

• It turns damp litmus blue

• It relights the glowing splint

Complete the general reaction.

Metal Carbonate + Acid --------->

• Salt + water

• Water + Carbondioxide

• Salt + water + Carbon monoxide

• Salt + water + Carbon dioxide

Tags

NGSS.MS-PS1-5

CaCO₃ + HCl ----------->

• H₂O + CO₂

• CaCl₂ + H₂O + CO₂

• CaCl₃ + H₂O+ CO2

• CaCl₃ + H₂O + CO

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-7