Pass Science

Which of the following is the best clue that a chemical reaction has taken place?

• Change in color

• Change in state

• Change in particle size

• Change in volume

Tags

NGSS.MS-PS1-2

While practicing in a simulator, an astronaut experienced an acceleration of 26 m/s2. The astronaut's mass was 63.0 kg. In Newtons, what force did the astronaut experience?

• 2.42 N

• 37 N

• 1638 N

• 42,588 N

Tags

NGSS.MS-PS2-2

In this model, which particle determines the reactivity of this atom?

• Particle W

• Particle X

• Particle Y

• Particle Z

Tags

NGSS.MS-PS1-1

Elements with seven valence electrons —

• are highly reactive

• are highly stable

• have a high mass

• have a low mass

A student uses a magnet to move a .04 kg ball bearing. The magnet exerts a force of 4N, which causes the ball bearing to begin moving. What is the acceleration of the ball bearing when it begins to move?

• .01 m/s2

• .16 m/s2

• 3.96 m/s2

• 100 m/s2

Tags

NGSS.MS-PS2-2

In the diagram, the arrows labeled III point to the atom's ______________.

• Protons

• Neutrons

• Nucleus

• Electrons

Tags

NGSS.MS-PS1-1

Which of the following is a characteristic of a chemical change?

• Formation of a new substance

• Change in shape

• Change in temperature

• Change in size

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the acceleration of an object if a force of 10 N is applied to a mass of 2 kg?

Tags

NGSS.MS-PS2-2

Which element is most likely to form an ionic bond with chlorine?

• Sodium

• Helium

• Carbon

• Oxygen

What is the primary function of the mitochondria in cells?

• Energy production

• Protein synthesis

• Photosynthesis

• Cell division

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7