Chemistry Review

Front

What is evidence of a chemical change?

Back

Bubbles forming is evidence of a chemical change.

Tags

NGSS.MS-PS1-2

Front

What is the name of the number that appears on the left side of a chemical formula and represents how many compounds there are?

Back

The number is called the Coefficient.

Front

How many electrons are in a Lithium atom?

Back

A Lithium atom has 3 electrons.

Front

What is the name of the number used to represent the number of each atom in a chemical formula?

Back

The number is called the Subscript.

Front

What do we call a group of elements that are shiny and conduct heat and electricity well?

Back

This group of elements is called Metals.

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not create new substances, while a chemical change does.

Tags

NGSS.MS-PS1-2

Front

What is an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.

Tags

NGSS.MS-PS1-1

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is the periodic table?

Back

The periodic table is a chart that organizes all known elements by their atomic number and properties.