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Salt dissolves in water

• physical Change
• chemical change

• physical change
• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Is melting ice a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-4

What kind of change is a frying egg?

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Physical or Chemical change?
stepping on a Coke can

• Physical 
• Chemical

A group of students investigated physical and chemical changes using paper.  The students recorded their observations in a table.
Which student correctly recorded all the changes that took place?

• Student 1
• Student 2
• Student 3
• Student 4

Tags

NGSS.MS-PS1-2

In a chemical reaction, you begin with 23 atoms. When the reaction is over you would expect to have ______ atoms remaining.

• 23

• less than 23

• more than 23

• There is not enough information to tell

Tags

NGSS.MS-PS1-5

Does this reaction show that the law of conservation of matter is conserved?

• Yes, the law of conservation of matter is conserved: reactant mass = product mass

• No the law of conservation of matter is not conserved: reactant mass does not = product mass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Based on the Law of Conservation of Matter, describe the relationship between the mass of the reactants and the mass of the products.

• The mass of the reactants equals the mass of the products.

• The mass of the reactants is less than the mass of the products.

• The mass of the reactants is greater than the mass of the products.

• The mass of the products is always greater than the mass of the reactants.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Does the dram represent the Law of Conservation of Matter?

• Yes, the law of conservation of matter is conserved: reactant mass = product mass

• No, the law of conservation of matter is not conserved: reactant mass do not = product mass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5