Chemical Reaction Review

Using dye to change the color of a shirt green.

• Chemical Change
• Physical Change

Tags

NGSS.MS-PS1-2

Which of the following IS a physical change?

• Getting a haircut
• Rusty metal
• sour milk
• A compound

A change in which a NEW substance is formed.

• Chemical change

• Physical change

• Casual change

• Formal change

Which of the following is NOT an example of chemical change?

• sour milk
• burning wood
• breaking a pencil
• rust

Tags

NGSS.MS-PS1-2

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

Is frying an egg a physical or chemical change?

• chemical
• physical

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2

What is physical change?

• How two chemicals react with one another when combined

• A property that we can measure or observe with our 5 senses or other tools

• When two chemicals react with one another to form a new substance

• When a change occurs but it does not result in the formation of a new substance

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

• 2
• 16
• 8
• 5

Tags

NGSS.MS-PS1-1

Which of the following models best demonstrates a balanced chemical equation?

• F
• G
• H
• J

Tags

NGSS.MS-PS1-5

The red numbers in the image below represent ________

• subscripts

• coefficients

• products

• reactants

Tags

NGSS.HS-PS1-7