Typically, ____ (pH 2.5) contains 5% acetic acid by volume. |
calcium |
The core of a pencil contains ____ (made of carbon not lead). |
dry ice |
Mixing HCl and NaOH produces ____ (table salt) and water. |
graphite |
Milk (pH 6.7) is slightly acidic because it contains ____. |
lactic acid |
The solid form of carbon dioxide (CO2) is ____. |
NaCl |
Iron can oxidize to iron oxide, which is also known as ____. |
ozone |
Hard water contains ____ and magnesium ions. |
rust |
Dioxygen (O2) and ____ (O3) are allotropes of oxygen. |
vinegar |