How does Sunscreen Work?
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9 Terms
Which chemicals are found in mineral based sunscreen?
Zinc oxide and titanium dioxide.
Difference between white sunscreen lifeguards use and modern sunscreen?
White sunscreen uses a thick zinc oxide and uses a layer that reflects the UVs, while modern sunscreens use chemicals that absorb the UVs.
What level sunscreen is the most recommended and why?
SPF 30. Anything afterwards makes very little difference. Absorbs UV rays.
Atoms of sunscreen are held together by which bond?
Covalent bonds.
How do sunscreens protect us from UV radiation?
Mineral sunscreen reflects UVs, modern sunscreen absorbs through chemicals.
Certain chemicals are hurting the marine ecosystems. Which chemicals and what are some safer alternatives?
oxybenzone and octinoxate. These chemicals cause coral bleaching, damage DNA and disrupt reproductive systems. Mineral-based sunscreens with zinc oxide are less harmful to marine life.