CHEMISTRY
How many elements are there
118
1 type of cell is the plant cell, what is the other?
animal cell
angle 2 = 70
angle 3 = ?
angle 3 = 60
x + 1 = 9
x = 8
What does an atomic number stand for
How many protons there are in an atom
Humans take in oxygen and let out what? mention the chemical formula
angle 1 = 23
angle 2 = 122
angle 3 = ?
angle 3 = 35
3x - 2 = 7
x = 3
What is the most common element?
Hydrogen
What color is chlorophyll
green
mention two Pythagorean triples
3,4,5
6,8,10
5,12,13
2x - 4 = 4
x = 4
If an element is in its gas form, mention if its shape is definitive or not, and describe how the particles move
indefinite shape and indefinite volume
particles move freely and are far apart
What is ATP used for?
ATP is used to create sugar and organic compunds
if side 1 = 5
side 2 = 12
what is side 3
provide every step and the Pythagoras equation
a2+b2=c2
13cm
Solve for X
-3 + 2x = 11
x = 7
mention an element, its atomic number, and how many protons it has.
your element cannot be hydrogen
Gold - 79 protons - atomic number of 79
What is a Chloroplast and what is chlorophyll
chlorophyll is a structure in a plant cell, it is inside chloroplasts, chlorophyll is green and it is what gives color to the plants, it is how they absorb sunlight
find the length of the Hypotenuse and find the area of the triangle
side 1 = 6 cm
side 2/BASE = 8 cm
What is the length of the hypotenuse (side 3)?
Height = 13
Hypotenuse = 10 cm
area = (bxh)/2
= (8 x 13)/2
= 52
Solve for X
2x + 6 = 4x - 2
x = 4