Which examples represent chemical changes? Check all that apply.

burning wood

souring milk

melting copper to join two copper pipes together

browning of a cut apple

cutting a potato into small pieces

Is density a chemical or physical change?

Which polymer is a biopolymer? polystyrene polyethylene polylactic acid polyvinylchloride

600 into scientific notation

What pressure in kPa is exerted by 2.150 mol of Co, at 57.00 °C in 0.7500 L?!

What is the name of the engineer who investigated the efficiency of steam engines? Michael Faraday O Frederic Tudor OSadi Carnot O Robert Boyle

Using the clausius clapeyron equation determines the heat of vaporization from experimental measurements of vapor pressure. the vapor pressure of dichloromethane is measured as a function of temperature and the results are tabulated.

Why is it important for people to understand how to properly dispose of waste in a watershed?

As you travel from a solid to a gas, energy is being absorbed or given off?

Do step 3 as outlined in the lab guide. Record your results in the appropriate blanks. A = B = C = D = E = F = G = H = A 3-column table with 9 rows. Column 1 is labeled Time half-life cycles, n with entries Initial, 1, 2, 3, 4, 5, 6, 7, 8.

When writing 6,020,000 in scientific notation, it is correctly written as: 6.02 x 106 6.02 x 10-6 602. x 106 0.602 x 10-8