Intro to Matter, Measurements, and Essential Chemistry Tools (Fill-in-the-Blank)

A set of fill-in-the-blank flashcards covering essential topics from the notes: matter, states of matter, physical vs chemical changes, properties, SI units, scientific notation, SI prefixes, significant figures, and dimensional analysis.

In a physical change, the substance remains the __.

substance

In a chemical change, a new __ is formed.

substance

A suspension is a heterogeneous mixture where the dispersed particles will __ over time.

settle out

Colloids are mixtures whose particles __

do not settle

The total mass of a system remains __ during any process.

constant

The state of matter can be changed by increasing or decreasing the

temperature and pressure

Solids have fixed __ and shape.

volume

Liquids have fixed __ but take the shape of the container.

volume

Gases have no fixed __ and shape.

volume

Physical change cannot produce a new __.

substance

Chemical change results in a change in __; new substances are formed.

composition

Melting ice is an example of a __ change.

physical

Burning wood is an example of a __ change.

chemical

A homogeneous mixture has a(n) __ composition.

uniform

A heterogeneous mixture has a __ composition.

nonuniform

Oil and water form a __ mixture.

heterogeneous

Physical properties can be observed without changing the substance's __.

identity

Chemical properties describe how a substance __ with other substances.

reacts

One SI base unit for temperature is the __.

kelvin

Derived units are combinations of base units; velocity has the unit __.

m/s

The SI base unit for mass is __.

kilogram

The SI base unit for length is __.

meter

The SI base unit for time is __.

second

The SI base unit for amount of substance is __.

mole

Volume in SI is expressed in __

m^3

In scientific notation, move the decimal point until the number is between the __.

1 and 9

The exponent in scientific notation represents the __ of the original number.

magnitude

Express 93,000,000 in scientific notation: __.

9.3 x 10^7

Express 0.000000486 m in scientific notation: __.

4.86 x 10^-7

Mega- prefix means __ times 10^6.

one million

Kilo- prefix means __ times 10^3.

one thousand

Centi- prefix means __ times 10^-2.

one hundredth

Milli- prefix means __ times 10^-3.

one thousandth

Micro- prefix means __ times 10^-6.

one millionth

Nano- prefix means __ times 10^-9.

one billionth

Pico- prefix means __ times 10^-12.

one trillionth

Significant figures reflect the __ of a measurement.

precision

Leading zeros are __ significant in a measurement.

not

For multiplication and division, round the final answer to the same number of __ as the least precise measurement.

significant figures

For addition and subtraction, round the final answer to the same number of __ as the least precise measurement.

decimal places

Dimensional analysis uses conversion factors to ensure final answers have correct __.

units

Volume can be found from mass and density using V = __.

m/density

To convert units, the technique used is __ analysis.

dimensional