7th Ch 7 Test

_______ and _______ are in the nucleus of the atom, while _______ are in orbitals in the space outside of the nucleus.

If an element has an atomic number of 17, it also has 17 protons and

__________ theory stated that atoms have a positive nucleus. The electrons move within fixed orbits around the nucleus.

Mercury is an element. Which of the following would be the same for all atoms of mercury?

_________ theory stated that atoms were the smallest particles as matter. He saw atoms as fully solid spheres.

Which class of elements are the opposite of metals and are poor conductors?

Which group is Group 18?

Within an atom, electrons

How many protons are in Beryllium?

Which of these is the part of an atom that contains the protons and neutrons?

Which group below is Group 1?

Which part of an atom has a negative charge?

Atoms are made up of smaller parts called ___________ particles

Who's theory stated that :

In an element symbol, the first letter is always _________ and if there is a second letter, it is __________.

The overall charge of the nucleus is

Which class of element are good conductors?

Which group is Group 2?

Elements that have __________________________________ __________________ end up in the same column in the periodic table

How many electrons does carbon have?

An atom with an equal number of electrons and protons has no ________________.

Horizontal rows in a periodic table are called ____.

Atomic mass is the mass of the __________ and the ___________ in an atom.

What part of an atom exists in orbitals surrounding the nucleus?

A model of an atom is shown below. The blue dots are electrons, and the red dot are the nucleus. This model represents

Which item on this element square represents the atomic number?

Vertical columns on the periodic table are called ______

Which number is the atomic mass?

The __________________ indicates the total number of protons and neutrons in the nucleus of the atom.

The atom is the basic building block of all ____________.

Which of the following make up the nucleus of an atom?

The modern theory states that ______ do not orbit around the nucleus. Instead they move at high speeds to form a cloud.

Which group is Group 17?

The periodic table only contains ____________.

The modern periodic table is organized by increasing _____________ _____________.

How many neutrons are in a Gold atom?

On the periodic table, Periods are

_____________ theory stated that atoms have electrons that are placed randomly within a “soup” of positive charges.

The picture shows a model of a helium and lithium atom. What is true about the lithium and helium atoms?

An atom of the element with atomic number 6 always has _____.