Biology
What shape is DNA?
Double helix
The most versatile element.
Carbon
what is caused by friction?
heat
____ turns iodine solution from brown-orange to blue-black.
what is it?
starch
What are the two elements that have 2 or less electrons?
Hydrogen and Helium
what do AC and DC mean in terms of currents
AC - alternating current
DC - direct current
The term used to describe the number of chromosomes in an egg or sperm cell is a _____
haploid
What is Avagradros number?
6.02*10²³
The angle of incidence is the angle between the incident light ray and the _____
normal
What is the equation of photosynthesis
Carbon dioxide + Water --> gluecose + oxygen
how many electrons does oxygen have in the outer shell.
6
What is the name of the device used to change the size of an alternating voltage?
transformer
what does HIV stand for?
human immunodeficiency
name 4 of the six of the elements from the noble gasses.
Helium, Neon, Argon, Krypton, Xenon, Radon,
The average kinetic energy of the particles in a gas is directly proportional to _______
temperature of the gas