Chem 1201 Sample Exam 1

Chem 1201 Sample Exam 1 - CHEMISTRY 1201 Examination I...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMISTRY 1201 Examination I (Chapters 1-3) Slightly modified exam from Fall 2008 Form 1 Time allowed: 75 minutes CALCULATORS ARE PERMITTED IN THIS EXAMINATION Encode your answers on the SCANTRON sheet with soft pencil. At the end of the exam, turn in the SCANTRON to one of the exam proctors. Encode 1 under Grade or Education on the scantron sheet 1) Which of the following substances is a mixture ? (i) a solution of sodium chloride in water (ii) an alloy of zinc and copper (iii) carbon dioxide gas (iv) copper(II) chloride (v) blood A) (i) only B) (i) and (ii) only C) (iii) and (iv) only D) (iii), (iv) and (v) only E) (i), (ii) and (v) only 2) Which of the following elements is a diatomic gas at room temperature? A) copper B) sulfur C) helium D) nitrogen E) carbon 3) Which of the following numbers, when expressed to 3 significant figures, is 5.66 (i) 5.66500 (ii) 5.66510 (iii) 5.66499 (iv) 5.66501 (v) 5.66935 A) (i) only B) (i) and (iii) only C) (ii), (iv) and (v) D) (iii) only E) (i) and (iv) only 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4) Your calculator displays the following number: 704.452141. When expressed to FOUR significant digits and in scientific notation , it becomes . A) 7.044 × 10 2 B) 70.45 × 10 1 C) 7.045 × 10 2 D) 70.45 × 10 0 E) 0.7044 × 10 - 2 5) A cube of iron has a mass of 15.37 g. If each side of the cube has dimensions of 1.25 cm, what is the density of iron? A) 1.23 g/cm 3 B) 1.92 g/cm 3 C) 3.00 g/cm 3 D) 7.87 g/cm 3 E) 10.5 g/cm 3 6) Which of the following substances is NOT an element? A) Cr
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 7

Chem 1201 Sample Exam 1 - CHEMISTRY 1201 Examination I...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online