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NGS Ch 09 - Section 1: Atomic Structure

Authored by Jay Sanzin

Science

7th Grade

NGSS covered

Used 14+ times

NGS Ch 09 - Section 1: Atomic Structure
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18 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the basic building blocks of matter?

Molecules

Compounds

Elements

Mixtures

Answer explanation

The basic building blocks of matter are elements. Elements are pure substances that cannot be broken down into simpler substances and are the fundamental components that combine to form molecules and compounds.

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the smallest piece of matter that still has the element’s properties?

Molecule

Atom

Electron

Compound

Answer explanation

The smallest piece of matter that retains the properties of an element is an atom. Atoms consist of protons, neutrons, and electrons, and they define the chemical identity of an element, unlike molecules or compounds which are made of multiple atoms.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which particle in an atom carries a positive electric charge?

Quark

Proton

Neutron

Electron

Answer explanation

The proton is the positively charged particle in an atom, found in the nucleus. In contrast, neutrons have no charge, and electrons carry a negative charge. Quarks are constituents of protons and neutrons.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who is often called the father of modern chemistry?

Antoine Lavoisier

Robert Boyle

Dmitri Mendeleev

John Dalton

Answer explanation

Antoine Lavoisier is often called the father of modern chemistry due to his role in establishing the law of conservation of mass and his work in chemical nomenclature, which laid the foundation for modern chemical science.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which model of the atom did Niels Bohr introduce?

Electron Cloud Model

Solar System Model

Billiard Ball Model

Plum Pudding Model

Answer explanation

Niels Bohr introduced the Solar System Model of the atom, where electrons orbit the nucleus in defined paths, similar to planets around the sun. This model was a significant advancement in atomic theory.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Who discovered the electron?

J.J. Thomson

Marie Curie

Ernest Rutherford

Robert Millikan

Answer explanation

J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays, demonstrating that they were composed of negatively charged particles, which he named electrons.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Aristotle believe the world was made of?

Atoms

Four elements

Compounds

Molecules

Answer explanation

Aristotle believed the world was made of four elements: earth, water, air, and fire. This theory was foundational in ancient philosophy, contrasting with later atomic theories.

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