NORTHWEST CHEM 24114 - Chemistry Quiz (3 pages)

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M 1 1 1 2 Classification of Matter and Atomic View Question 1 Match each of the following to classify as a pure substance or a mixture 1 A sugar solution with sugar crystals at the bottom mixture 2 liquid water and steam at 100 degrees Celsius pure substance 3 Lead Pb Pure substance 4 a sand containing quartz silicone dioxide and calcite calcium carbonate mixture Question 2 All of the following are elements except 1 2 3 4 5 Calcium Carbonate calcite silicon Si potassium K iodide I2 magnesium Mg Question 3 Match each to the correct classification 1 Methane which burns in pure oxygen to form carbon dioxide and water compound 2 Air composed mainly of nitrogen and oxygen Homogeneous mixture 3 Platinum element 4 Freshly squeezed orange juice Heterogeneous mixture Question 4 Chunky Peanut Butter would be classified as which of the following 5 6 7 8 an element a compound homogeneous mixture heterogeneous mixture Question 5 Sucrose C12H22O11 which is commonly known as table sugar would be classified as which of the following 1 2 3 4 an element a compound homogeneous mixture heterogeneous mixture Question 6 Freshly brewed coffee would be classified as which of the following 1 2 3 4 an element a compound homogeneous mixture heterogeneous mixture Question 7 Matter can be represented at the atomic level as being composed of individual units The smallest unit is an atom that is represented by a circle and different types of atoms will be shown as different colors Units that are formed by chemically combining atoms are called molecules Looking at the figure below select the appropriate description of the contents of container A 1 2 3 4 an element a compound a mixture of compounds a mixture of elements 1 an element 2 a compound 3 a mixture of an element and a compound 4 a mixture of compounds 5 a mixture of elements Question 8 Looking at the figure below select the appropriate description of the contents of container B Question 10 Which of the following elements is not diatomic in