Which balanced equation represents a redox reaction? 1. mg + cl2 → mgcl2 2. cao + h2o → ca(oh)2 3. hno3 + naoh → nano3 + h2o 4. nacl + agno3 → agcl + nano3

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist

What is true for a substance that releases energy