Which of the following statements are true about elements? Choose the two correct answers. A.
Elements are the simplest form of matter.

B.
Elements combine together to form compounds.

C.
Elements are found in sunlight

D.
Elements are always positively charged.

E.
Elements are found in both living and nonliving things.

Drag each tile to the correct box arrange the layers not order from oldest to youngest

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.