According to modern atomic theory, electrons are usually found —

outside the nucleus and often far away from it.

In the Periodic Table Elements extract below, what do the two numbers pointed by A and B indicate?

A is the mass number and B is the atomic number.

How do we identify the columns and rows of the Periodic Table of the Elements?

The columns are called Groups or family and the rows are called Periods

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8.2 Science SOL Review

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Questions 10

Answers

1
As you go from left to right and top to bottom what number(s) always increase?
neither
both
atomic number
atomic mass
2
Which two types of atomic particles carry an electrical charge?
quarks and neutrons
protons and electrons
neutrons and quarks
protons and neutrons
3
Which of the following states of matter is best illustrated by this picture?
liquid
gas
solid
plasma
4
Which particles make up the nucleus of an atom?
electrons and neutrons
protons and electrons
neutrons and isotopes
protons and neutrons
5
According to modern atomic theory, electrons are usually found —
outside the nucleus and often far away from it.
outside the nucleus, but very close to it.
inside the nucleus.
either inside or outside the nucleus.
6
Which statement is true according to current thinking?
The size of atoms changes over time, from large to small to large again.
The nucleus is very mobile, and moves around inside a cloud of electrons.
An atom is mostly empty space.
An atom is particles, so tightly packed that there is little empty space.
7
In the Periodic Table Elements extract below, what do the two numbers pointed by A and B indicate?
A is the atomic number and B is the mass number.
A is the mass number and B is the atomic number.
A is the number of neutrons and B is the number of protons.
A is the number of protons and B is the number of neutrons.
8
Which atomic particles can move from one atom to another or can be shared during a chemical reaction?
electrons
protons
nucleus
neutrons
9
What is the correct ordering of these small parts of matter, from the smallest to the largest?
atom < electron < proton
electron < atom < proton
electron < proton < atom
proton < atom < electron
10
How do we identify the columns and rows of the Periodic Table of the Elements?
The columns are called Groups or family and the rows are called Periods
The columns are called Periods and the rows are called Groups
They are called metals, nonmetals, and metalloids
The elements are numbered 1 to 118.

8.2 Science SOL Review Flashcards | StudBud