Single substance that may be a single compound, or a mixture of several materials that are stable under normal conditions. They will combust or decompose and create hot gases when ignited or catalyzed.

Fuel containing 2 components (fuel + oxidizer). Fed individually to a thrust chamber for mixing and combustion. 

True or False: Because they react immediately (and violently) with most amine-based fuels, nitric acids were the oxidizers that first gave rise to the term “hypergolic”.

Which type of propellant generally contains 1 liquid component and 1 solid grain component?

True/False Because of extensive safety protocols and handling procedures, there are very few human case reports of hydrazine toxicity.

True or False: Liquid oxygen is an ideal oxidizer for use in missile systems.

Annelida means

Which of the following is not a characteristic of Nematoda?

Which of the following characteristics of animals is not true about Porifera?

The flame cell is considered to be the first, “primative” ______.