Electron energy levels; first shell

5 electron

3 electrons

2 electron

1 electron

What is NOT true of a scientific law?

Which hydrocarbon is saturated? 1. C2H2 2) C3H4 3) C4H6 4) C4H10

Write the chemical equation for the following word equations. Include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas → solid zinc oxide + sulfur dioxide gas.

A molecule is polar when: a. electrons are shared equally among its atoms b. one region of the molecule has a small negative charge while another region has a small positive charge c. the molecule has no charged regions d.

What is a change in heat energy when 40 g of water at 25°C is raise to 60°C

The nucleus of an atom holds 4 neutrons and 4 protons, how many electrons does it have

What types of atoms are in nh3 or ammonia how many hydrogen and how many nitrogen

A piece of wood near a fire is at 23°C. It gains 1,160 joules of heat from the fire and reaches a temperature of 42°C. The specific heat capacity of wood is 1.716 joules/gram degree Celsius. What is the mass of the piece of wood? ОА. 16 g OB.

Which of the following is a viable possibility for a liquid particle that loses energy? (select all that apply) the liquid particle may become a gas particle the liquid particle may become a solid particle the liquid particle may become a slower

What is true of the bottom layer of the ocean? Select the two correct answers. A. It has the largest plants. B. It has the lowest salinity. C. It has the greatest density. D. It has the coldest water. E. It has the most sunlight.