Matter Assessment Per 8 Chem

Which of the following statements about matter is FALSE? Matter is smooth and continuous. Matter exists in either a solid, or gas state. Matter occupies space and has mass. Matter is ultimately composed of atoms. A pure substance is: composed of two or more regions with different compositions. composed of only one type of atom or molecule composed of two or more different types of atoms or molecules that has constant composition. composed of one or more different types of atoms or molecules combined in definite proportions Molten iron metal has a(n) _ volume and a(n) _ shape indefinite, definite indefinite, indefinite definite, definite definite, indefinite The change of a substance from a solid directly to a gas is called melting condensation vaporization sublimation When ice melts to form liquid, energy is absorbed destroyed released created A solution is an example of a (an) heterogenous mixture homogenous mixture compound molecule density is a ratio of weight over space mind over matter mass over volume volume over mass Why do some substances float on water? they are warmer than water they are less dense than water they are more dense than water they are colder than water A block of wood measuring 3 cm on each side has a mass of 27 g. What is the density of the block? 3 g 0.3 g 102 g 30 g When you heat a sample of a solid, the sample gets a little bigger. This is mainly because: Heating helps the particles slide past each other The particles move faster and get a little further apart Heat helps the particles grow Heating the sample makes it lighter Match the item to the correct category Element Silver helium in a balloon carbon in a pencil Compound Table Salt (NaCl) Glucose (C6H12O6) carbon dioxide (CO2) Mixture Gatorade taco trail mix air A sample of alcohol has a density 0.82 g What is the mass of 5500 mL of the alcohol? Show ALL WORK for CREDIT A rectangular solid of unknown density is 40 cm^3 The mass of this solid is 300 grams. Given this information for this homogeneous material, calculate the density. Show ALL WORK for Full Credit Physical vs Chemical Properties and Changes Answer what the first column is describing as either Chemical Change, Chemical Property, Physical Change, Physical Property in the second column Evaporation of Acetone Physical Change Melting Point Physical Property Condensation forming on a window Physical Change Flammability Chemical Property Rust Chemical Property Density Physical Property Digestion of a burger Chemical Change Peanut Butter Chocolate Chip Cookie Recipe. Choose if each tag is a compound, mixture, physical or chemical change compound mixture compound chemical change chemical change physical change