Force and Motion Assessment

Courtney is interested in determining the pH of different sodas. She uses probeware to test each soda. Her results are recorded in the data table. Which graph BEST illustrates Courtney's results?

• 
• 
• 
• D. None of the above

Tags

NGSS.MS-PS1-2

The force of an object is equal to its ​ (a)   multiplied by its​ (b)  

• mass
• acceleration
• velocity
• speed
• weight

Tags

NGSS.MS-PS2-2

Samples of the air we breathe that were taken from different parts of the world have all been found to contain about 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and 0.07% other gases. Based on this analysis, which is the correct classification for air?

• element

• compound

• homogenous mixture

• heterogeneous mixture

Isaac Newton is known for his laws of motion. These laws have been most helpful to scientists —

• building space rockets

• studying types of trees

• discovering new fossils

• inventing new medicines

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which is the correct formula to find distance?

• D=SxT

• D=S÷T

• D=S+T

• D=T÷S

How many valence electrons are found in an atom of bismuth (Bi)?

• 15

• 6

• 83

• 5

Tags

NGSS.MS-PS1-1

Which of the following BEST supports your answer to how many valance electrons does Bismuth have?

• The atomic number of an element tells you the number of valence electrons.

• The group number next to the "A" tells you the number of valence electrons.

• The period the element is in tells you the number of valence electrons.

• The group number above the "A" tells you the number of valence electrons.

Which of the following statements accurately describes atoms of iodine (I) with a mass number of 127? Select TWO correct answers.

• 53 neutrons would be located in the nucleus.

• 53 electrons would be located in the nucleus.

• 53 electrons would be found orbiting the nucleus.

• 53 protons would be found in the nucleus.

• 53 protons would be found orbiting the nucleus.

Tags

NGSS.MS-PS1-1

Drew added yeast and sugar to lukewarm water and placed it in a flask. He stretched a balloon over the opening of the flask. After several minutes, he noticed small bubbles rising along the side of the flask as the balloon slowly began to inflate. How should the mass of the balloon/flask complex after the reaction relate to the mass of the balloon/flask complex before the reaction?

• The mass should be the same since matter is neither created nor destroyed.

• The mass of the flask/balloon complex after the reaction would weigh more since something new was created.

• The mass of the flask/balloon complex after the reaction should be less since a gas was created.

• The mass of the flask/balloon complex after the reaction should be less because the reactants are used up during the chemical reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student creates a mixture of water and washing soda weighing 10 g and a mixture of water and Epsom salts weighing 15 grams. He knows that when he mixes the two substances a chemical change will occur. According to the law of conservation of mass, what should the weight of the products be after he mixes them?

• 10g

• 15g

• 5g

• 25g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5