cooked for science

https://www.youtube.com/watch?v=rz4Dd1I_fX0

photosynthesis

carbon dioxiode + water (light arrow chlorophyll) glucose + oxygen

respiration

glucose + oxygen (energy released arrows atp) carbon dioxide + water

properties of metal

solid at room temperature, lustrous, melleable, ductile, electrical and thermal conductors, relatvely high melting and boiling points and sonorous

properties of non-metals

mostly found as solids or gases at room temperature, poor conductors of heat and electricity, brittle, dull, low melting and boiling points

metalloids

share characteristics with metals and non metals, semiconductors, solid at room temperature, brittle, ductile, malleable

atomic number 1

hydrogen

atomic number 2

helium

atomic number 3

lithium

atomic number 4

beryllium

atomic number 5

boron

atomic number 6

carbon

atomic number 7

nitrogen

atomic number 8

oxygen

atomic number 9

fluorine

atomic number 10

neon

atomic number 11

sodium

atomic number 12

magnesium

atomic number 13

aluminum

atomic number 14

silicon

atomic number 15

phosphorus

atomic number 16

sulfur

atomic number 17

chlorine

atomic number 18

argon

atomic number 19

potassium

atomic number 20

calcium

sign of a chemical change

smell, gas bubbling, temperature change, sound/light, change of colour