Horatio used the flat end of a hammer to remove a nail from a piece of wood. this is an example of using a hammer as a(n) lever. pulley. inclined plane. wheel and axle.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Will give brainliest it is a lab from k12 here is the linkfor each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. type your answer here. (score for question 3: of 5 points) were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. type your answer here. (score for question 4: of 5 points) make a general statement about the reactivity of the metals in this experiment. type your answer here.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.