Why is elemental zinc considered a pure substance?

What is the most important use of an elements atomic number? what else can we know from a neutral atoms atomic number?

What are the 3 different groups of metals called?

From what type of land feature is the geologist making her observations? plateau anticline syncline fault-block mountain

What will atoms with fewer than 8 electrons in their outermost shell do to become stable?

A reversible reaction at equilibrium can counteract the stress of an increase in pressure by:

Dominic and Eva are using the same type of stopwatches to measure the time it takes for a chemical reaction to occur. They each use the same stopwatch to measure the time.

An electronic circuit element consists of 23 mg of silicon. An electric current through the circuit adds heat at a rate of 7.4 x 10-3 J/s.

If an object sinks in water it's density is less than that of water true or false

What is the main link between water in the oceans and on land

Which of the following pairs lists a substance that can neutralize H2SO4 and the salt that would be produced from the reaction? CaOH2 and Ca (SO4) 2 LiOH and Li2SO4 NH4 and NH4SO4 NH3 and (NH3) 2SO4