Chem Unit Guide Flashcard

Front

What is the difference between observations (O) and inferences (I)?

Back

Observations are direct statements based on what is seen or measured, while inferences are conclusions drawn from those observations.

Front

How do you calculate mass number?

Back

Mass number is calculated by adding the number of protons and neutrons in an atom's nucleus.

Front

What is a characteristic property?

Back

A characteristic property is a feature that helps to identify a substance, such as density, boiling point, or solubility.

Front

What is the mass number of alpha particles?

Back

The mass number of alpha particles is 4, as they consist of 2 protons and 2 neutrons.

Front

What is the difference between qualitative (L) and quantitative (N) observations?

Back

Qualitative observations describe qualities or characteristics (e.g., color, texture), while quantitative observations involve measurements and numbers (e.g., height, weight).

Front

What is the purpose of a scientific guide?

Back

A scientific guide provides structured information and resources to help understand key concepts and principles in a subject.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number and properties, helping to predict chemical behavior.

Front

What are protons and their role in an atom?

Back

Protons are positively charged particles found in the nucleus of an atom; they determine the element's identity and atomic number.

Front

What are neutrons and their function?

Back

Neutrons are neutral particles in the nucleus of an atom; they contribute to the mass number and stability of the nucleus.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element, consisting of protons, neutrons, and electrons.