Is elephant toothpaste an exothermic or endothermic? How do you know?

An atom with an atomic number of 11 will have how many electrons in its outermost orbit

The stinking tube used to collect sap to produce maple syrup in Vermont may contain toxicological compounds that can potentially harm the health of those who consume. True or False?

What is the oxidation number of manganese in the permanganate ion (mno4 - ) ? a. 3 b. 2 c. 7 d. 2-

Where do we use controlled fission?

Calculate the subatomic particles for a given atom. a. Sulfur (S) b. Cobalt (Co) C. Uranium (U) d. Lead (Pb)

Which weighs more 10g of iron or 10g of water

Which pair of elements would combine to form an ionic compound? а b sodium and calcium sodium and chlorine carbon and oxygen carbon and sulfur с d

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? a. Nitrogen b. Oxygen c. Argon