California State University, Northridge BIO 101 CHAPTER 2 1)The formation of ions involves the:   A common application of PET scans is to search for                                                      Which of the following results from an unequal sharing of electrons between atoms?   Complete each statement with its correct definition   Which one of these shows the correct order, in INCREASING sizes of particles?   Fill in the blanks to make each statement correct If atoms have the same number of                                     but different numbers of                   , one of them must be an ION of the same element – If atoms have the same number of                                     but different numbers of                   , they must be different ELEMENTS – If atoms have the same number of                                     but different numbers of                   , they must be different ISOTOPES of each other   Complete each statement with its correct definition Two or more atoms of the SAME OR DIFFERENT elements, held together by chemical bonds

California State University, Northridge

BIO 101

CHAPTER 2

1)The formation of ions involves the:

2. A common application of PET scans is to search for                                                   

3. Which of the following results from an unequal sharing of electrons between atoms?

4. Complete each statement with its correct definition

5. Which one of these shows the correct order, in INCREASING sizes of particles?

6. Fill in the blanks to make each statement correct

If atoms have the same number of                                     but different numbers of

                  , one of them must be an ION of the same element –

If atoms have the same number of                                     but different numbers of

                  , they must be different ELEMENTS –

If atoms have the same number of                                     but different numbers of

                  , they must be different ISOTOPES of each other

7. Complete each statement with its correct definition

Two or more atoms of the SAME OR DIFFERENT elements, held together by chemical bonds ... –

Unstable isotopes ... – ,

Two or more DIFFERENT (i.e not all the same) types of atoms, held together by chemical bonds ...

8. The hydrogen bond between two water molecules forms because water is:

9. Match the description and the correct term