Which gas is used in the Haber process to manufacture ammonia and fertilizers?
nitrogen
Alkalis feel _____ to the skin (They convert the oils in your skin into _______).
soapy/soap
What substance has the formula NH3?
ammonia
Which letter is bases and which letter is alkalis?
A is alkalis. B is bases.
What is NaOH?
sodium hydroxide (lye)
Which gas fills bags of chips and snacks to make sure the food doesn't go rancid from exposure to oxygen?
nitrogen
How can we summarize a neutralization reaction?
acid + base -> salt + water
What is the formula for lye (caustic soda)?
NaOH (used in making paper, soaps, and in cleaners)
Why are these hydrangea flowers different colors?
Each one is a pH indicator.
Each plant grows best in certain pH soils. Which prefers more acidic soil, potatoes or onion?
potatoes (prefer 4.5-6.0, whereas onions prefer 6.0-7.5)
What do ALL metal oxides and hydroxides do?
They all neutralize acids, whether soluble or not. They are bases.
The atmosphere is 78% nitrogen and 21% oxygen. Name the next three most common gases.
argon (.9%) carbon dioxide (.04%) neon (.002%)...water vapor also OK (0%-3%)
Most bases are insoluble in water. Name a common alkali, a base that IS soluble.
sodium hydroxide, potassium hydroxide, calcium hydroxide (limewater), ammonia (ammonium hydroxide)
How can excessively alkaline soil be handled?
Add peat, compost or manure
Why might someone swallow the insoluble magnesium hydroxide?
It is an antacid.
How can excessively acidic soil be dealt with?
It can be neutralized with lime (calcium oxide, calcium hydroxide, calcium carbonate=limestone, or chalk).
What do you call a base that is soluble in water?
an alkali
What is KOH?
caustic potash (potassium hydroxide)
Name one of the substances commonly referred to as "lime".
calcium oxide, calcium hydroxide, calcium carbonate=limestone, or chalk
What kind of reaction occurs when an acid is mixed with a base?
a neutralization reaction
A flue-gas desulfurizer reduces emissions of what gas?
sulfur dioxide
What is the formula for limewater?
CaOH (calcium hydroxide)
What is the formula for ammonia?
NH3
What is the formula for caustic potash?
KOH (used in making soap)