Astudent has samples of five different types of metal. she measures the mass and volume of each sample. the measurements she took are in the table. type of metal mass (g) volume (cm3) aluminum 14.6 5.4 iron 33.1 4.2 lead 35.2 3.1 magnesium 10.6 6.1 silver 47.2 4.5 the student also has another piece of metal. she knows it is the same type of metal as one of her other samples, but she doesn’t know which one it is. she finds that its mass is 33.5 grams and its volume is 3.2 centimeters3. what type of metal is the unknown sample? a. aluminum 2.70 b. iron 7.87 c. lead 11.34 d. magnesium 1.74 e. silver 10.49

What does the process of natural selection involve

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5