What is not true about ionic bonds? they have low melting points, they conduct electric current when dissolved in water, they form hard brittle crystals

They have low melting points.

Explanation: Ionic bonds are formed by a complete transfer of electron from a metal to a non metal. This loss and gain of electrons between atoms result in positively and negatives charged ions respectively. The compounds formed is usually ionic with high electrostatic force of attraction and this makes them to have high melting points because high amount of energy is needed to break the bonds between the atoms.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?

gag reflex, poor dentition, gum retraction

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