What is the Periodic Table of Elements?

A chart of all known elements that provides information about their atomic structure and reactivity.

How do atoms form molecules?

Atoms combine through chemical reactions to form molecules.

Anything that has mass and takes up space.

How do scientists know atoms exist if they are so tiny?

Special microscopes, like the Scanning Tunneling Microscope, allow scientists to see atoms.

What did Ernest Rutherford's experiment show?

Most of an atom is empty space, with mass concentrated at the center.

What are some examples of elements?

Gold, iron, copper, and carbon.

How can the Periodic Table help find information about elements?

It shows the names, symbols, and atomic numbers, indicating the number of protons and electrons.

What is an example of a simple molecule?

Water (H2O), made of two hydrogen atoms and one oxygen atom.

What is an example of a complex molecule?

DNA, which is made up of many atoms in a complex structure.

What is the role of chemists?

To study atoms and molecules, creating new molecules for medicines and other uses.

What is the atomic number?

The number of protons in an atom, which also equals the number of electrons.

What is the significance of the atomic number?

It determines the identity of an element and its position on the Periodic Table.

What is a Scanning Tunneling Microscope?

A specialized microscope that can show individual atoms.

What is an example of a career studying atoms and molecules?

Biomedical scientists, who develop new medicines using molecules.

What is the structure of an atom?

Protons and neutrons form the nucleus, with electrons orbiting around it.

What is an example of a chemical reaction forming a molecule?

Hydrogen and oxygen reacting to form water.

What is the role of electrons in an atom?

They orbit the nucleus and are involved in chemical reactions.

What is the role of protons in an atom?

They determine the element's identity and contribute to the atomic mass.

What is the role of neutrons in an atom?

They contribute to the atomic mass and stabilize the nucleus.

What is an example of a molecule in the human body?

Hemoglobin, which carries oxygen in the blood.

What is the difference between an element and a molecule?

An element is a pure substance of one type of atom, while a molecule is made of two or more atoms bonded together.

What is the significance of the Rutherford experiment?

It demonstrated that atoms have a small, dense nucleus and are mostly empty space.

What is an example of a molecule used in medicine?

Insulin, used to treat diabetes.

What is the importance of the Periodic Table in chemistry?

It organizes elements by atomic number and properties, aiding in the study of chemical reactions.

What is an example of a simple element?

Carbon, which is made of only one type of atom.

What is an example of a complex element?

Uranium, which has a large number of protons and neutrons.

What is the role of the nucleus in an atom?

It contains most of the atom's mass and holds protons and neutrons.

What is an example of a molecule in food?

Sucrose (C12H22O11), which is table sugar.

What is the role of chemistry in everyday life?

It helps us understand the composition and reactions of substances, leading to new products and solutions.

What is an example of a molecule in nature?

Chlorophyll, which is used by plants for photosynthesis.

What is the role of biochemists?

To study large molecules like proteins and DNA, and develop applications like insulin production.

What is an example of a molecule in the environment?

Ozone (O3), which protects Earth from harmful UV radiation.

What is the role of the atomic structure in chemical reactions?

It determines how atoms interact and bond with each other.

What is an example of a molecule in technology?

Silicon dioxide (SiO2), used in computer chips.

What is the role of molecules in biology?

They form the building blocks of cells and tissues, enabling life processes.

What is an example of a molecule in the atmosphere?

Carbon dioxide (CO2), which is involved in the carbon cycle.

What is the role of molecules in the human body?

They make up cells, tissues, and organs, and are involved in biochemical processes.

What is an example of a molecule in industry?

Polyethylene, used in plastic production.

What is the role of molecules in the ecosystem?

They participate in nutrient cycles and energy flow, supporting life.

What is the role of molecules in health?

They are used in medicines and treatments to improve health and cure diseases.

Atoms & Molecules Flashcards

Student preview

69 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is an atom?

Back

The basic unit of an element, consisting of protons, neutrons, and electrons.

2.

FLASHCARD QUESTION

Front

What are the three particles that make up an atom?

Back

Protons, neutrons, and electrons.

3.

FLASHCARD QUESTION

Front

What is a proton?

Back

A positively charged subatomic particle located at the center of an atom.

4.

FLASHCARD QUESTION

Front

What is a neutron?

Back

A subatomic particle with no charge located at the center of an atom.

5.

FLASHCARD QUESTION

Front

What is an electron?

Back

A negatively charged subatomic particle that orbits the nucleus of an atom.

6.

FLASHCARD QUESTION

Front

What is the nucleus of an atom?

Back

The center of an atom, made up of protons and neutrons.

7.

FLASHCARD QUESTION

Front

What is a molecule?

Back

Two or more atoms bonded together.

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