Which of the following statements does not describe a physical property of iron? :10 1.Iron is denser than aluminum. 2.Iron melts at 1535°C. 3.Iron can be formed into different shapes. 4.Iron reacts with strong acids.
All of the following are units for density except :10 1.g/mL 3 2.g/mL 3.g/cm 3 4.g/L
Which of the following is not a physical property of matter? :10 1.Boiling point 2.Flammability 3.Solubility (how well something dissolves) 4.Density
What is the volume of a 45 g piece of copper that has a density of 8.92 g/mL? :10 1.400 mL 2.0.20 mL 3.5.0 mL 4.54 mL
A block of wood has dimensions of 9.5 cm long, 2.3 cm wide, and 1.8 cm high. What is the density of the block of wood if it has a mass of 28.6 g? :10 1.1100 g/cm 3 2.0.73 g/cm 3 3.2.1 g/cm 3 4.1.4 g/cm 3
Which of the following is a physical change? :10 1.Melting ice cubes 2.Burning paper 3.Rusting iron 4.Burning gasoline
One property of all mixtures is that they :10 1.can be separated without chemical changes. 2.contain a definite ratio of elements. 3. contain chemically combined elements. 4.are solutions.
All of the following are indicators of chemical changes except that :10 1.gas is released. 2.light and sound are released. 3.the substances don’t change. 4.new substances are formed.
Which of the following is not a physical way to separate a mixture? 1.using a magnet to pick up one part of the mixture 2.heating the mixture until it burns 3.passing the mixture through a filter 4. spinning the mixture in a centrifuge :10
Which of the following is least likely to be a sign that a chemical change is taking place? 1.A bright flame is produced. 2.Bubbles of gas are released. 3.A solution changes from colorless to red. 4.Spilled rubbing alcohol seems to disappear. :10
Which segment represents the solid state only? 1.A to B 2.B to C 3.C to D 4.D to E :10
Which segment represents evaporation? 1.A to B 2.B to C 3.C to D 4.D to E :10
What is happening to the particles during segments D to E? :10 1.Moving faster 2.Spreading apart 3.Moving faster and spreading apart 4.Moving slower and closer together
Freezing/solidification is a ____ change because ___. :10 1.Endothermic; heat energy is gained 2.Exothermic; heat energy is lost 3.Endothermic; heat energy is lost 4.Exothermic; heat energy is gained
Which of the following is not a part of the kinetic theory of matter? :10 1.Higher potential energy means higher temperatures 2.Higher temperatures make particles move faster 3.Large particles move more slowly 4.All matter is made of particles