Which of the following is a physical change?

explosion

rotting of food

evaporation

rusting of iron

Which of the following is not a chemical property? a: reactivity with oxygen b: malleability c: flammability d: reactivity with acid

What is the difference between a cold front and a warm front?

The observation that 4.0 g of hydrogen reacts with 32.0 g of oxygen to form a product with O:H mass ratio-8:1, and 6.0 g of hydrogen reacts with 48.0 g of oxygen to form the same product with O/H mass ratio = 8:1 is evidence for the law of 1.

Pablo drove 260 miles using 12 gallons of gas. at this rate, how many gallons of gas would he need to drive 286 miles?

The equation 2c3h7oh + 9o2 - - > 6co2 + 8h2o is an example of which type of reaction?

Does changing the temperature or concentration of the reacting particles affect the rate at which the reaction occurs?

How are sex chromosomes different from other chromosomes

What are the two categories of solids?

Which feature of a hypothesis leads to a new experiment

What do organisms need in the space where they live