Unit 1 Review 2024

Front

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

Back

Atoms

Front

What is the number of protons in the element with atomic number 7?

Back

7

Front

Where does the majority of an atom's mass exist?

Back

In the nucleus

Front

Convert 12 cg to m.

Back

This conversion is not possible.

Front

Which of the following is the most reactive group of non-metals?

Back

Halogen

Front

What is the definition of an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the difference between protons and neutrons?

Back

Protons are positively charged particles, while neutrons have no charge.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged particles that orbit the nucleus and are involved in chemical bonding.

Front

What is the significance of the nucleus in an atom?

Back

The nucleus contains protons and neutrons, making it the center of mass and positive charge of the atom.