Midterm (2023/2024)

Front

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

Back

Atoms

Front

Which state of matter has tightly packed molecules?

Back

Solid

Front

Air has no chemical symbol or formula. It is a __________.

Back

Mixture

Front

What is the number of protons that the element in this image contain?

Back

7

Front

According to the Bohr Model, electrons are only found in specific orbits around the nucleus called __________________________.

Back

Energy Levels

Front

What is the smallest unit of an element that retains the properties of that element?

Back

Atom

Front

What is a substance made of two or more different elements that are chemically bonded?

Back

Compound

Front

What is the term for a physical combination of two or more substances that can be separated by physical means?

Back

Mixture

Front

What is the positively charged center of an atom called?

Back

Nucleus

Front

What is the term for the number of protons in the nucleus of an atom?

Back

Atomic Number