CHM 1033 Chemistry for Health Science - Review Flashcards

Flashcards covering key concepts from the Chemistry for Health Science lecture, including matter, energy, measurements, significant figures, conversions, and density.

What is Chemistry?

The scientific study of matter and its properties, the changes that matter undergoes, and the energy associated with those changes.

What is Matter?

Material that makes up all things, occupies space, and has mass.

What are Chemicals?

Substances with the same composition and properties wherever found.

What is Percentage?

A part of a whole expressed in hundredths.

What is the formula for calculating percentage?

Percentage = (Part / Whole) x 100

What are the two parts of a number in scientific notation?

Numbers written in scientific notation have two parts: coefficient and power of 10.

What are the four systems of measurement?

SI, Metric, U.S. Customary, Imperial

What are examples of basic units of measurement in the SI system?

Length (m), Mass (kg), Volume (m3), Temperature (K), Time (s)

What are common prefixes of the Metric System?

mega-, kilo-, deci-, centi-, milli-, micro-, nano-, pico-

What is the formula to convert Celsius to Fahrenheit?

T℉ = (1.8T℃) + 32

What is the formula to convert Celsius to Kelvin?

TK = T℃ + 273.15

What is Volume?

The space occupied by a substance.

What is Mass?

Mass measures the quantity of matter.

What are Significant Figures?

The recorded digits, both certain and uncertain, in a measurement.

What are the rules for determining significant figures?

All nonzero digits are significant; Zeros between nonzero digits are significant; Zeros at the end of large standard numbers are not significant unless indicated by a decimal point; Zeros at the beginning of a decimal number are not significant, but trailing zeros are; All digits in a scientific notation coefficient are significant.

What are Exact Numbers?

Have no uncertainty associated with them and do not limit the number of significant digits in a calculated answer.

What are the three types of conversion factors?

Standard, Specific, Percent

What is a conversion factor?

A numerical ration that represents the relationship between different quantities.

What is the approach to problem solving unit conversions?

Dimensional Analysis Method

What is the formula for density?

Mass of substance / Volume of substance

What is volume displacement?

A solid completely submerged in water displaces its own volume of water.

What is a hydrometer?

Used to measure the specific gravity of urine.