Simple Chemistry Review

Which of the following is a physical property?

• ability to burn
• ability to rust
• density
• how a metal reacts with acid

2 or more substances chemically combined

• element
• compound 
• mixture

Which is not a sign of a chemical change?

• water evaporating
• gas bubbles
• color change
• temperature change

Tags

NGSS.MS-PS1-2

pure substances that can not be broken down into other substances

• element
• compound 
• mixture

In which state of matter do the particles spread apart and fill all the space available to them?

• solid
• liquid 
• gas

Tags

NGSS.MS-PS1-4

Two or more substances that are together but not chemically combined are:

• element
• compound
• mixture

An example of intensive property (as opposed to extensive property) is

• molar mass

• color

• mass

CO₂ is considered as?

• ionic

• non polar covalent

• polar covalent

• mixture

Tags

NGSS.HS-PS1-1

An element is composed of only one type of 

• atom
• molecule
• compound
• mixture

Which of the following cannot be broken down into a simpler substance?

• water
• sand
• the element silver