Atoms: Building Blocks of Matter Review

Except for in the simplest type of hydrogen atom, all nuclei consist of

Which of the following statements of Dalton's atomic theory describes conservation of mass?

The atomic number of an element is

What is the molar mass of oxygen?

The nuclear symbol for uranium-235 should be written as

What is the charge of a neutron?

Which is one way that Dalton's atomic theory has been shown to be incorrect?

Which is not a part of Dalton's atomic theory?

In CO, 1 g of C combines with 1.33 g of O. How many g of O will be in CO₂?

Mass number is

Electrons can be found

The molar mass of an element is numerically equal to the element's

Tap water is 89% O and 11% H. How much of ocean water is H?

Experiments with cathode rays being deflected by a negative charge shows that the rays are

Cathode rays are composed of particles that are now known as

What is the definition of one atomic mass unit?

Isotopes are atoms of the same element that hav edifferent

Rutherford called the region that deflected alpha particles

If two or more compounds are composed of the same two elements, the ratios are small whole #s.

One mole is defined as

Every chemical compound contains the same elements in the same proportions by mass.This is the

Using improved chemistry equipment, chemists saw mass is neither created nor destroyed. This is

Which of the statements of Dalton's atomic theory describes the law of multiple proportions?

The isotope uranium-235 has 92 p+ and 143 n⁰. Therefore, its mass number is

John Dalton though that atoms

The total volume of the nucleus of an atom is

Rutherford's experiment concluded that the nucleus is

Most of an atom is

Hydrogen that is composed of atoms with two neutrons is called

Objects with like charge repel. Why do protons remain close to each other in the nucleus?