Which process results in a chemical change?

A) Tearing tin foil

B) melting an iron bar

C) crushing an aluminum can

D) burning magnesium ribbon

What is the valence electron configuration for halogens?

What metric measurement is similar to a mile?

Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL. How much concentrated solution would you take to prepare 1.15 L of 0.115M HNO3 by mixing with water?

How many miles will a person run during a 10 kilometer race?

What happens when you heat an air filled sealed can?

Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks. We should properly report the temperature measurement as:

What does the orbital tell you about the location of the electron?

If a 1.45 M solution has 2.43 g HCl dissolved, what is the volume of solution? (Change g Hl into mol using molar mass)

Which of the following describes a reaction that reaches equilibrium?

What happens to water during evaporation? A) It turns gas as it cools. B) It turns to liquid as it cools. C) It turns to solid as temperature decreases. Eliminate D) It turns to gas as the temperature increases.