Atoms: Building Blocks of Matter Review

The nuclear symbol for uranium-235 should be written as

What is the charge of a neutron?

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

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

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

Rutherford's experiment concluded that the nucleus is

John Dalton though that atoms

One mole is defined as

Mass number is

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

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

Rutherford called the region that deflected alpha particles

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

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

The atomic number of an element is

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

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

What is the definition of one atomic mass unit?

What is the molar mass of oxygen?

Most of an atom is

Electrons can be found

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

Hydrogen that is composed of atoms with two neutrons is called

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

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

Isotopes are atoms of the same element that hav edifferent

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

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

Cathode rays are composed of particles that are now known as

The total volume of the nucleus of an atom is