1) What is the main part of the cell? 2) What is the formula for density? 3) How do you get density? 4) What is melting point in relation to diffusion? 5) What is heavier: a gas or a liquid? 6) What colour is the plant cell? 7) What's a cell membrane? 8) How do you measure the density of a test tube? 9) How do you get mass? 10) What is a cell? 11) What is density? 12) What is periodic symbol for gold? 13) What is the periodic symbol for iron? 14) Where is a cell on a leaf? 15) What does a cell membrane do? 16) What is the cell's brain called? 17) What carries the DNA in a cell? 18) What is the name of the liquid a cell floats in? 19) What is the chemical symbol of Magnesium? 20) What is the mass of Polystyrene?

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