Matter is a slightly archaic word for something with mass, as in the conservation of matter (which must be paired with the conservation of energy to still hold true. Mass can be converted back and forth between energy, so therefore so can matter. Of course relativistic mass is conserved as it's a function of the energy of an object in that reference frame.
Answer:
2.24 Liters are in 4.4 grams of CO2 at STP
The first basic metals on the periodic table are alkali metals.
The answers are true, true, false, true, and false.
