Chapter 4 Chem

How many neutrons does carbon-14 have?

The cathode is … charged and the anode is … charged.

The first scientist to actually do an experiment to prove his theory about atoms was …

In Greek, the word “atomos” means …

This law says the total mass of a system remains the same; mass is neither created nor destroyed in a chemical rxn.

List the subatomic particle in order of the scientists that discovered them: Rutherford, Chadwick, Thomson

The idea that matter was made of tiny indivisible particles was first proposed by …

In an isotope notation, the number on top is the... and the number on the bottom is the ...

The oil drop experiment was performed by …

The Greek philosopher who believed that all matter was made of hyle was …

Z has 2 isotopes:Z-85 atomic mass:84.9118 amu/abundance:72.15%; & Z-87 atomic mass:86.9092 amu/abundance:27.85%.

This scientist proposed the sun (not Earth) is center of our universe which marked the start of scientific revolution

Sir Joseph John Thomson discovered the …

The substances that Dalton couldn’t break down in his experiments he called …

A photographic plate and U were placed in a closed drawer, no sunlight, the image produced on the plate, demonstrating

Rutherford was helped in his gold foil experiment by …

What makes up most of the volume of an atom?

How many protons does Rn-224 have?

Using the periodic table, determine which element has 10 protons.

What makes up most of the mass of an atom?

According to the Law of Definite Composition, any two samples of NaCl will have …

To stop the following in the order given, … would be required: beta particle, gamma ray, alpha particle.

In J.J. Thomson’s experiments, the ray was deflected from the negative plate towards the positive plate, proving it was

Which radiation would travel towards a positively charged plate?

In Rutherford’s experiments, the backward deflection of alpha particles gave evidence of an atom’s …

Which subatomic particles are found in the atom’s nucleus?

This law states that elements can combine in different small number ratios to form different compounds

A spontaneous emission type from the nucleus of an atom travels at 100% the speed of light, can be stopped by 1.5cm Pb.

What is the charge of an alpha particle?

The Danish physicist who developed a theoretical structure of the atom in 1913 & won a Nobel Prize for this model.

This subatomic particle has no charge.

What isotope is the standard (basis) for the amu?

What is the charge of gamma ray?

Which has a charge of +1?

One part of Dalton’s atomic theory that has been modified since then is the part that stated…