Chapter 1 Matter and Change

Which of the following is a example of physical change ?

• burning of wood

• photosynthesis

• melting of ice-cream

• ripening of fruit

A chemical change may involve

• Evolution of gas

• Change in temperature

• Change in colour

• All of the above

Tags

NGSS.MS-PS1-2

________________ is anything that has mass and takes up space.

• volume
• matter
• mass
• weight

Tags

NGSS.MS-PS1-1

2 or more different elements that are bonded together is called a/an ...

• A. element

• B. compound

• C. mixture

• D. solution

___________ are the smallest unit of an element that maintains the properties of that element.

• Atoms

• Elements

• Compounds

• Mixtures

Tags

NGSS.MS-PS1-1

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

• mixture

• pure substance

• compound

• element

Pure substances include

• elements and homogeneous mixtures

• compounds and homogeneous mixtures

• elements and compounds

• heterogeneous mixtures and elements

We know that air is a mixture and not a compound because

•  it can be heated to a higher temperature.
• it can be compressed to a smaller volume.
• it is colorless.
• its composition can vary.

Which of the following is best classified as a homogeneous mixture?

• pizza 
•  blood 
• hot tea
• copper wire

Which of the following symbols does not match the element name given?

• Al, aluminum
• Co, copper
• K, potassium
• P, phosphorus