review for Chemistry S1 Exam 2024

Front

What is Density?

Back

Density is a physical property that measures the mass of a substance per unit volume.

Front

Which of the following is a p block element? Ca, Ar, Re, Au

Back

Ar (Argon) is a p block element.

Front

How many protons, neutrons, and electrons are in an atom with 4 protons, 2 neutrons, and 3 electrons?

Back

Proton = 4, Neutron = 2, Electron = 3.

Front

As you move down a group in the periodic table, what happens to the atomic radius?

Back

The atomic radius increases because you add more and more shells (energy levels).

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot Structure only shows the element symbol and its outermost electron shell.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity.

Front

What is a chemical property?

Back

A chemical property describes a substance's ability to undergo changes that transform it into different substances.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.