Subatomic particles and history of chemistry

Who discovered electrons using a cathode ray experiment?

Electrons have no charge.

Which subatomic particle has a negative charge?

Which of the following subatomic particles has a positive charge?

Which of the following is NOT a characteristic of metals?

What ideas did the Plum Pudding model propose?

Cathode ray particles have a _______ charge

Which of the following is a characteristic of metalloids?

The cathode ray can be deflected by a magnetic field because the ray particles have a _ charge?

Sodium (Na) is a metal.

Silicon (Si) is a metalloid.

The quantum model states electrons are in specific 3D regions around the nucleus of an atom.

How many protons are in this element?

Which subatomic particle is found in the nucleus?

This scientist was one of the first to develop quantitative experiments.

who did the plum pudding model?

This scientist developed a systematic way of extracting metal from ore.

The gold foil experiment was important because

How many neutrons are in this isotope?

Which of the following is NOT a metal?

This scientist developed medicinal uses for various minerals.

The planetary model states electrons are in specific pathways around the nucleus.

Democritus & Leucippos coined the term "atom".

The mass number represents the number of

Joseph Priestly discovered oxygen.

Which subatomic particle is used to identify different isotopes?

The neutron has no charge.

Which model of the atom is the current model?

Metalloids share some characteristics of metals and nonmetals.

What is an Orbital?

Isotopes have the same number of protons, but different numbers of neutrons.

Who discovered the atomic nucleus?

Boron (B) is a metalloid.

Which of the following is a characteristic of metals?

Which subatomic particle determines the chemical properties of the element?

How many neutrons are in this isotope?

Daltons atomic theory was the first that was backed by data.

How many protons are in this isotope?

The atomic number represents the number of

Oxygen (O) is a metalloid.

Which scientist discovered electrons exist in specific energy levels?

Dalton's Atomic Theory included:

Which subatomic particle determines the identity of an atom?

Which of the following is a property of nonmetals?

John Dalton created the first atomic theory