Unit Two

How many atoms of Hydrogen in TWO molecules of sugar?

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

Identify the REACTANTS:

• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify the PRODUCTS:

• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

This illustration is a/an _____________

• compound

• element

• mixture of elements

• mixture of elements and compounds

Tags

NGSS.MS-PS1-1

Select the subatomic particle that has a mass of 1 AMU.

Tags

NGSS.MS-PS1-1

Label the PTOE correctly.

a

b

c

d

Metalloids

Metals

Non-metals

One more non-metal

Tags

NGSS.MS-PS1-1

The type of covalent bond where the atoms pull unequally on the shared electrons is called:

• polar

• nonpolar

What things are examples of things we might observe that indicate a chemical change has occurred? (3 answers)

• a color change

• bubbles as a gas is created

• tears, folds, or cuts

• cracking or crumbling away of material

• changing phase (boiling, freezing, etc.)

Tags

NGSS.MS-PS1-2

Type of chemical reaction that releases energy:

• exothermic

• endothermic

Which statement accurately describes the role of key organelles in energy transfer?

• Energy is captured and stored in the nucleus and released in the chloroplast.

• Energy is captured and stored in the nucleus and released in the mitochondria.

• Energy is captured and stored in the chloroplast and released in the mitochondria.

• Energy is captured and stored in the mitochondria and released in the chloroplast.

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-3