Which process represents a chemical change

How do you write a word equation

The halogens, the elements of Family 17 on the periodic table, combine easily with elements from Family 1. When a halogen reacts with a metal, what type of compound is formed? 1. potassium 2. alloys 3. noble gas 4. salt

how much heat will be absorbed by 25g of chloroform when its temperature started at 67.0C and after it was 112.0C

What coefficients are needed to balance the equation for the complete combustion of methane? Enter the coefficients in the order ch4

How many grams of solute are in 1.00 liter of 0.200m na2so4 solution?

100 ml oxygen at 1.75 atm and 200ml nitrogen at 0.6 atm are passed to a 500 ml vessel. Calculate the total pressure of the mixture in the vessel at same temperature

Which is the best metal to use in an alloy to increase its electrical conductivity

Ice does not need to melt into liquid water before it can return to the atmosphere as water vapor. a. True b. False

How much ice at a temperature of - 17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 ∘C?

Why does a gas fill completely the vessel in which it is kept?