8.P.1.3 8.P.1.4

Which shows one example of a physical change and one example of a chemical change?

• boiling water and melting wax

• rusting iron and baking a cake

• dissolving powder and shredding paper

• freezing water and burning coal

Tags

NGSS.MS-PS1-2

Students performed an investigation on how aluminum cans taken to a recycle center were able to be reused. When the aluminum can is crushed, it undergoes which type of change?

• a physical change because the can is heated

• a chemical change because new metal is formed

• a physical change because the material remains the same

• a chemical change because the old aluminum can is changed into a new aluminum

  can

How many atoms of Carbon (C) are in C₆H₁₂O₆?

• 3

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

If reaction starts with 20g of reactants it should produce 

• a total of 40g of products

• a total of 10g of products

• a total of 80 g of products

• a total of 20g of products

Tags

NGSS.MS-PS1-5

Calculate the number of Oxygen atoms in Al(OH)₃

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Coefficients in chemical formulas...

• Multiply just the first atom

• Add to the subscripts at the end of the molecule

• Multiply elements without subscripts

• Multiply EVERYTHING!

Tags

NGSS.MS-PS1-5

Is a a rusting bicycle a chemical or physical change?

• chemcial

• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is spoiling food a physical or chemical change?

• phyiscal

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a correctly written chemical equation that demonstrates the conservation of mass?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If 100 grams of vinegar and 5 grams of baking soda are poured in a container, a small amount of gas will be produced. What will the final mass of the products be if the gas is trapped in the container?

• 100g

• 104g

• 105g

• 110g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5