Physical and Chemical Changes

Is burning wood a chemical or physical change?

• chemical
• physical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Is glass breaking a chemical or phyiscal change?

• chemical
• physical

Is making salt water to gargle with a physical or chemical change?

• physical
• chemical

A change in which NEW substances are formed.

• Chemical change
• Physical change
• Casual change
• Formal change

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O
• MgO
• Mg and MgO
• O and MgO

Tags

NGSS.MS-PS1-2

Exothermic reactions...

• Absorb energy
• Release energy
• Release Color
• Absorb Color

Tags

NGSS.MS-PS3-5

In chemical reactions, the law of conservation of mass is......

• disobeyed
• not true
• obeyed
• used sometime

Tags

NGSS.MS-PS1-5

What kind of change occurs if matter changes in amount, size, or shape?

• substance change

• chemical change

• physical change

• elemental change

Tags

NGSS.MS-PS1-4

What is sublimation?

• The change of a solid into liquid and then into gas

• A solid turning into a liquid

• The change of a solid into gas

• A liquid turning into a gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2