Data

Record your data either in your lab notebook or in the space below.

Time

Radioactive Atoms

0.5"

Half-Life

Minutes

Predicted

Simulated

Cycles, n

Acted out

0.0

100

Initial = 0

100

1

100

0.5

1

2.

1.0

1.5

3

2.0

4

2.5

5

3.0

6

3.5

7

4.0

8

id

What subatomic particle is specifically responsible for combining the atoms together to form a new substance?

For a fixed amount of gas at a fixed volume, what will happen if the absolute temperature is doubled?

what is the amount of heat, in joules, required to increase the temperature of a 49.5-gram sample of wanted from 22c to 66c

Limestone originates because of: A. chemical precipitation B. chemical weathering C. physical weathering D. biological processes

Concerning the disposal of materials at the end of the experiment, which methods are safe? Check all that apply. Dump the acids and bases down the drain so they can be combined with sewer water. Dispose of pH paper in the trash.

Using the periodic table, which of the following can be predicted for an atom of chlorine? It has 35.45 protons It has 17 protons It has 35.45 neutrons It has 17 neutrons

Which of these represents a chemical change?

A chemist measures the amount of iodine solid produced during an experiment. she finds that 1.6 g of iodine solid is produced. calculate the number of moles of iodine solid produced.

Write the equilibrium constant: Pb3 (PO4) 2 (s) = 3Pb2 + (aq) + 2PO2 (aq)

How many orbitals are there in the shell with n = 4?