Match these items. 1.an atom that has gained or lost electrons

2. produces OH - ions when added to water

3. produces H - ions when added to water

1.an atom that has gained or lost electrons:

2. produces OH - ions when added to water:

3. produces H† ions when added to water:

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.