IQWST

Unlike a chemical reaction, the parts of a mixture...

(Scientific Principle #14)

• can be separated.

• can not be separated.

• change into new substances

• are the same.

A puddle that dries up in the street is an example of which of the following?

(Scientific Principle #13)

• a chemical reaction

• a physical change

• dissolving

Tags

NGSS.MS-PS1-4

During the the electrolysis of water ....

• hydrogen gas & oxygen gas were produced

• a battery provided an electrical current to cause the reaction

• twice as much hydrogen gas was produced than oxygen gas

• all of the above occurred

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How do we know when a chemical reaction has definitely taken place?

• By making an educated guess

• By observing signs of a possible chemical reaction

• By observing a new substance with different properties

• It's impossible to tell if a chemical reaction has taken place

Tags

NGSS.MS-PS1-2

Which of the following is a way to represent a chemical reaction?

• By using a word equation

• By using a model

• By using a chemical formula

• All of the above are correct

Tags

NGSS.MS-PS1-2

What can this diagram show us about chemical reactions?

• matter is not created during a chemical reaction

• matter is not destroyed during a chemical reaction

• atoms rearrange during a chemical reaction to form new substances

• all of the above can be demonstrated

Tags

NGSS.MS-PS1-5

During the the electrolysis of water ....

• a chemical reaction occurred

• water molecules were destroyed

• a precipitate was formed

• none of the above occurred

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What does IQWST stand for in the context of science education?

• Investigating and Questioning the World through Science and Technology

• Innovative Questions in World Science Teaching

• Inquiry and Quality in Science Teaching

• International Quest for World Science and Technology

Which of the following is a key component of the IQWST curriculum?

• Memorization of scientific facts

• Hands-on experiments and inquiry-based learning

• Standardized testing

• Lecture-based teaching

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS1-6

NGSS.MS-PS2-2

In an IQWST unit on chemistry, students might explore which of the following concepts?

• The periodic table and chemical reactions

• The history of scientific discoveries

• The anatomy of the human body

• The laws of motion

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5