Ms Ps1 6

An gel ice pack getting cold after you put it in the freezer for an hour.

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following IS a chemical change

• using chalk

• water freezing

• slicing cheese

• digestion

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The process by which one or more substances change to produce one or more different substances

• Chemical Process

• Reactant

• Chemical Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Some reactions require an input of energy in order to occur. Photosynthesis, the process in which plants use light energy to make sugars, requires an energy input. This reaction would be classified as .

• endergonic

• exergonic

• synthetic

• exothermic

Tags

NGSS.MS-LS1-6

When a wood fire burns, it releases heat into the environment. This type of

• endothermic

• exothermic

• catalytic

• endergonic

Tags

NGSS.MS-PS1-4

What are the reactants in the chemical equation pictured?

• CH₄ and CO₂

• CH₄ and O₂

• CO₂ and H₂O

• O₂ and H₂O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Why does this picture demonstrate the Law of Conservation of Mass?

• the number of atoms of each element are the same on both sides

• they start out separate and end up combined

• the same elements are used

• it doesn't demonstrate the Law of Conservation of Mass

Tags

NGSS.MS-PS1-5

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled

• the product is half the mass of the reactants

• the mass is the same

• the mass changes depending on the reaction

Tags

NGSS.MS-PS1-5

10g of white powder reacts with 10g of clear liquid. The reaction bubbles and changes color producing a black liquid that has a mass of 13g. What can be concluded?

• 5g of gas was produced

• This experiment violates the conservation of mass

• 7g of gas was produced

• The excess reactant is destroyed & disappears during the reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5