True or false:

1. a drain cleaner gives off heat when it breaks down the protein in a clogged drain pipe.

2. furniture polish can be made by mixing lemon juice and mineral oil.

3. hydrogen peroxide turns into water and oxygen when poured on a cut.

4. flatbread requires more yeast than regular bread.

!

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves