STEM: General Chemistry

The following are the physical properties of matter EXCEPT:

• Color

• Flammability

• Density

• Melting Point

Which of the following is an example of physical property of matter?

• acidity

• heat of combustion

• odor

• oxidation

What kind of property results in the substance into changing into a new substance?

• Chemical property

• liquid property

• physical property

• real property

Tags

NGSS.MS-PS1-2

Which of the following tells you that a chemical change has occured?

• Change in color

• Change in shape

• melting

• vaporizing

Tags

NGSS.MS-PS1-2

Which property depends on the the amount of matter present?

• extensive

• intensive

• hardness

• mass

Tags

NGSS.MS-PS1-5

Which of the following is a example of extensive property?

• color

• density

• temperature

• weight

A chemical change is different than a physical change because in chemical change ?

• Chemicals are used

• Molecules do not physically touch

• A new substance is formed and in physical change no new substance is formed

• The change can be seen but in physical change it cannot.

Tags

NGSS.MS-PS1-2

Suppose you have two white powders (Baking powder and baking soda) an you want to distinguish the two. How would you identify the given materials without tasting them?

• get their masses

• place them in water then observe

• touch them one by one

• none of the above

Tags

NGSS.MS-PS1-2

Using their properties mixtures can be separated too. When iron and wooden match mixed and you wish to separate them, how would it be possible?

• place them in water

• use magnet to attract the iron

• dissolve them in water

• get their densities

How can a mixture of sand, salt, water and paper be separated?

I. filter the mixtures to separate the sand from salt solution

II. use the tong to separate the paper from the mixture

III. evaporate the mixtures to separate the salt from water

• I, II, and III

• II, I, and III

• III, II, and I

• III, I, and II