Outer membrane surrounding the yolk, allantois, and amnion that allows for gas exchange

Which diatomic molecule is formed when the two atoms share six electrons

Which of the following changes is an exothermic chemical change Boiling water Melting ice Chopping wood Fireworks exploding

What makes a gas, what are the particles

What are the parts of the Kinetic Theory of Matter?

What is allotropy?

A piece of glass with a mass of 32.50 g specific heat of 0.840 J/g*°C and an initial temperature of 115 °C was dropped into a calorimeter containing 57 g of water (specific heat 4.184 J/g*°C).

Which of the following is the most likely description of the product or products of a double-displacement reaction? A) one new compound B) two new compounds C) oxygen and energy D) one new compound and an element

A balloon is filled with 12L of air at a pressure of 2 atm. What is the volume of ballon if the pressure is changed to 3 atm?

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these