CHM 104 Module 1 Practice Test – Review Flashcards

Review flashcards covering key CHM 104 Module 1 topics: measurement rules, properties and changes, classification, significant figures, dimensional analysis, and basic density/volume calculations.

Which statement about ruler A and ruler B is correct?

In a measurement made with ruler B, millimeters are estimated.

What property of metals allows them to be drawn into thin wires?

Ductility

Which term refers to elements that have properties of both metals and nonmetals?

Metalloids/Semimetals

A solid at room temperature, shiny and silvery, conducts electricity and heat well, can be pounded into thin sheets, and can be drawn into thin wires is a __.

Metal

A(n) __ is the simplest type of chemical substance; it cannot be broken down into simpler chemical substances by ordinary chemical means.

Element

A(n) __ is a general statement that explains a large number of observations.

Theory

Classify as exact or measured: 2 dozen roses.

Exact

Classify as exact or measured: The distance from New York to Chicago.

Measured

The number of centimeters in a meter is __.

Exact

The mass of a car is __.

Measured

The amount of water in a glass is __.

Measured

Is temperature a physical or chemical property?

Physical

Is mass a physical or chemical property?

Physical

Is density a physical or chemical property?

Physical

Is combustibility a physical or chemical property?

Chemical

Is reactivity a physical or chemical property?

Chemical

Leaves changing color in autumn is a physical or chemical change?

Chemical

Yeast rolls rising is a physical or chemical change?

Chemical

Dissolving a packet of Kool-Aid in water is a physical or chemical change?

Physical

A nail rusting is a physical or chemical change?

Chemical

Melting a popsicle is a physical or chemical change?

Physical

Classify as element, compound, or mixture: calcium

Element

Classify as element, compound, or mixture: sodium hydroxide

Compound

Classify as element, compound, or mixture: sweet tea

Mixture

Classify as element, compound, or mixture: soil

Mixture

Classify as element, compound, or mixture: carbon

Element

How many significant figures are in 4,200 m?

2

How many significant figures are in 0.00533 cm?

3

How many significant figures are in 3.0593 ft?

5

How many significant figures are in 106.00 mi?

5

How many significant figures are in 100 ml?

1

Calculate: 10.536 cm + 9.34 cm (use correct sig figs)

19.88 cm

Calculate: 13.425 cm × 4.63 cm (use correct sig figs)

62.2 cm^2

Calculate: 25 g + 10.5 g (use correct sig figs)

36 g

Calculate: 40.52 mL × 2.7 g/mL (use correct sig figs)

110 g

Convert 95.4 pounds to kilograms.

43.3 kg

Convert 36.9 quarts to gallons.

9.23 gal

Convert 7.368 feet to millimeters.

2246 mm

Convert 26.38 grams to pounds.

0.0581 lb

Convert 68.36 liters to gallons.

18.07 gal

Determine the volume of a cube that is 4.70 cm on edge.

104 cm^3

What is the mass of the ethyl alcohol that exactly fills a 200.0 mL container? The density is 0.789 g/mL.

157.8 g

Calculate the density of sulfuric acid if 35.4 mL has a mass of 65.14 g.

1.84 g/mL

A block of lead with dimensions 4.50 cm × 5.20 cm × 6.00 cm has mass 1587 g. What is the density of lead?

11.3 g/cm^3

Find the mass of 250.0 mL of benzene with density 0.8765 g/mL.

219.1 g

What volume of silver metal will have a mass of exactly 2500.0 g if the density is 10.5 g/cm^3?

238.10 cm^3

What is the length of the line above the ruler? (1 inch = 2.54 cm; other conversions given)

Approximately 1.76 cm (depends on estimation)