Middle School Science

What is the mass number of the atom shown in the Bohr model?

• 11

• 12

• 23

• Can't be determined

Tags

NGSS.MS-PS1-1

what group number are the noble gases

• 17

• 18

• 14

• 15

How many Oxygen (O) atoms are in 2C₂HO₈C_l2

• 2

• 16

• 8

• 5

Tags

NGSS.MS-PS1-1

How many molecules of Carbon are in the following formula? 3C₂H₆

• 3

• 6

• 12

• 18

Tags

NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What is the net force?

• 5000 N right

• 4000 N right

• 40 N left

• 4000 N left

Tags

NGSS.MS-PS2-2

What law is best described by inertia?

• 1st

• 2nd

• 3rd

• law of conservation of mass

When something has speed in a certain direction it is called ___________.

• motion

• position

• velocity

• speed

Acceleration of an object happens when things ________

• slow down

• go faster

• change direction (turn)

• All of the above

Tags

NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s².  what was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2