Chemistry 1 Module 1 Summative Assessment
A student weighs a copper slug on a digital balance and records a mass of 0.04050 grams. How many significant figures are present in this measured quantity?
Which of the following values contains exactly three significant figures?
Express the measurement 0.00000450 meters in correct scientific notation.
Convert 6.120 × 10⁴ grams into standard decimal notation.
In which of the following values are the zeros considered "placeholder" or non-significant digits?
Perform the calculation and round to the correct number of significant figures: 12.52 g + 3.124 g + 0.47 g.
Solve the following subtraction problem, preserving correct decimal precision: 145.675 mL − 24.2 mL.
Calculate the total area of a metal plate measuring 3.24 cm by 1.2 cm. Round your answer to the correct significant figures.
A density calculation yields a raw result of 2.699 g / 1.0 cm3. How should this result be properly reported?
Follow the correct order of operations (PEMDAS) to solve: (15.42 g − 14.11 g) / 2.45 mL. Round to the final correct precision.
A piece of magnesium ribbon is 14.5 centimeters long. What is this length expressed in meters?
A sample of gas occupies a volume of 2.50 Liters. Convert this volume into milliliters (mL).
Convert a mass measurement of 450.0 milligrams (mg) into grams (g).
A pipeline moves a fluid chemical at a rate of 12.0 inches per second. Knowing that 1 inch = 2.54 cm, what is this speed in centimeters per second?
If a student needs to convert a mass of 8.96 g into kg, which of the following conversion factors is set up correctly?
A student notices that a digital balance reads 0.14 g before anything is placed on the pan. To ensure an accurate measurement of a chemical, what button must they press?
When reading the volume of liquid water inside a 100 mL graduated cylinder, where exactly should your eye line align?
A standard 100 mL graduated cylinder has minor tick lines spaced every 1 mL. To what decimal place should a student estimate and record their volume measurements?
Why should solid objects be slid gently down a tilted graduated cylinder rather than dropped straight into the water?
A student measures the mass of an empty beaker as 45.2 g. After adding a liquid sample, the balance reads 73.8 g. What is the isolated mass of the liquid sample?
An unknown metal block is dropped into a graduated cylinder containing 25.0 mL of water. The water level rises to 34.5 mL. What is the exact volume of the metal block?
Calculate the density of a mineral specimen that has a mass of 48.30 grams and displaces a net volume of 6.0 mL of water.
Pure liquid water has a benchmark density of 1.00 g/mL. A block of unknown material has a calculated density of 0.84 g/mL. What will happen when this block is placed into a beaker of water?
If a block of pure solid iron is chopped exactly in half, what happens to the density of each remaining piece?
A teacher changes the simulator fluid from water to a dense saltwater solution (density = 1.25 g/mL). A block that previously sank in pure water now floats in the saltwater. Why?
Which of the following is scientifically classified as a form of matter?
What are the two fundamental, non-negotiable physical prerequisites required for an entity to be classified as matter?
An extrinsic (extensive) property of a material is one that:
Which of the following properties is considered an intrinsic (intensive) property of matter?
Why is chemical density designated as an intrinsic property rather than an extrinsic property?
How is a chemical "pure substance" distinct from a standard chemical "mixture"?
Which of the following samples constitutes a pure substance?
Any material that consists of two or more physically combined substances that retain their own individual chemical identities is classified as a(n):
Which of the following operations describes a physical separation technique used to isolate parts of a mixture without altering chemical identity?
If a sample of matter can be separated into simpler components using basic mechanical filtration, the original starting sample must have been a(n):
A mixture that exhibits completely uniform composition, appearance, and properties throughout its entire volume is classified as:
Which of the following pairs contains only heterogeneous mixtures?
A homogeneous mixture of two or more metals (or a metal and a non-metal) melted together is commonly referred to in laboratory nomenclature as a(n):
A chemical substance that cannot be broken down into simpler, stable substances by any chemical reaction or physical process is defined as a(n):
Pure crystalline table salt (NaCl) is classified as a compound rather than an element because: