What are the three main groups in the periodic table

Based on the diagram, which list places the fossils in order from youngest to oldest? o o O o ammonite, fern, trilobite, gastropod gastropod, ammonite, fern, trilobite trilobite, gastropod, ammonite, fern fern, ammonite, gastropod, trilobite

Living things use specially shaped protein catalysts called

How do wet lands form

Why is the periodic table called the periodic table

Determine the direction of electron flow and label the anode and the cathode. label each electrode as negative or positive. write a balanced equation for the overall reaction

Detectors in the walls of four containers (A-D) count the number of collisions between gas molecules and the surfaces of the containers. The detectors count 10, 15, 20, and 30 collisions per second for containers A, B, C, and D, respectively.

Oxygen, hydrogen, and water are substances. which of these substances are elements

Water has what type (s) of properties? a. physical onlyB. chemical onlyC. physical and chemical

1. Determine which object will SINK or FLOAT in water. Block #1 (3.2 g/mL) A. Sink Block #2 (0.02 g/mL) B. Float _Block #3 (0.98 g/mL) Block #4 (1.2 g/mL) Block #5 (2.4 g/mL)

The correct symbol for the ion formed by nitrogen is: