Biochemical Concepts

What does the nucleus of an atom contain?

protons and neutrons

What is the region called where electrons move?

electron clouds

Why does water dissolve many ionic and molecular compounds?

polarity

What is the total number of atoms in Sucrose C12H22O11?

45

A very strong base might have the ph of?

13

Fluorine has 9 electrons so how many electrons are in its secondary energy level?

7

What compound is made by atoms held together by covalent bonds?

molecule

A chemical which is strongly acidic will probably have what ph?

3

How are ionic and covalent bonds alike?

fill outer electron levels

What chemical bond is formed from H and O?

covalent bond

What number of valence electrons a stable arrangement for most atoms?

8

Atomic number for calcium is 20 how many valence electrons are there?

2 valence electrons

What is the attraction of molecules of the same called?

cohesion

Since water can dissolve many substances what title is it given?

universal solvent

Atoms of the same element but have different numbers of neutrons are called?

isotopes

What number could be considered slightly acidic?

5.8