Chapter 1 Lecture

Flashcards covering the definition of matter, mixture types, intensive and extensive properties, SI units, temperature conversions, scientific notation rules, and significant figures based on the lecture notes.

Matter is defined as anything that has __________ and can occupy space.

mass

A mixture is classified as __________ if the final substance is uniform.

homogeneous

A mixture with non-uniform components, such as a salad with lettuce, cucumber, and tomato, is referred to as __________.

heterogeneous

Unlike mixtures, when elements combine to form a __________, they must do so in a fixed ratio or a specific proportion.

compound

The identity of an element is represented by a unique symbol; for example, Carbon is represented as $C$ and Sodium is represented as __________.

$$Na$$

An __________ property, such as mass or volume, depends on how much matter is present.

extensive

The preferred SI unit for mass used by scientists to communicate in a uniform language and avoid error is the __________.

kilogram

Density and temperature are examples of __________ properties because their values remain fixed regardless of the quantity of substance present.

intensive

The SI unit for temperature is __________.

Kelvin

To convert a temperature from degrees Celsius to Kelvin, you should add __________.

$$273.15$$

Water boils at a temperature of __________ and freezes at a temperature of $0^{\text{}^{\circ}C}$.

$$100^{\text{}^{\circ}C}$$

In scientific notation, when moving the decimal place to the left, the exponent is __________.

positive

In scientific notation, when moving the decimal place to the right, the exponent is __________.

negative

When multiplying numbers in scientific notation, the rule is to __________ the exponents.

add

When dividing numbers in scientific notation, you __________ the exponents.

subtract

Before adding or subtracting numbers in scientific notation, the exponents must be made __________.

uniform

Large numbers like $1000$ without a decimal are considered an __________ case for significant figures because they can represent different counts of precision.

ambiguous

When adding or subtracting, the final answer must conform to the measurement with the least number of __________.

decimal places

When performing multiplication or division, the final answer should be rounded to match the measurement with the least number of __________.

significant figures