SLO Review

If a rock has a volume of 40 mL and a density of 200 g, what is its density?

• 5 g/mL

• 50 g/mL

• 160 g/mL

• 240 g/mL

A student performed an investigation to test if steel wool would react to air and water. The student performed the investigation by following these steps:

a. placed the steel wool in a jar and screwed on the cap

b. Let the jar stand for one full day.

c. Recorded observations.

d. Wet the steel wool in some water

What oder should the steps have been completed?

• d, a, b, c

• c, b, d, a

• a, b, d, c

• b, a, d, c

Tags

NGSS.MS-PS1-2

When 68g of Calcium Carbonate (CaCO3) is heated in a laboratory, a chemical reaction produces 50g of Calcium Oxide (CaO):

CaCO3 + heat---> CaO + CO2

Maggie hypothesizes that 18g of CO2 were produced. Which statement best supports her hypothesis?

• The Law of Conservation of Energy says energy cannot be created nor destroyed

• The Law of Conservation of Matter says that matter cannot be created nor destroyed

• The Law of Reactivity states that all reaction cause an increase in thermal energy.

• The Law of Atomic Mass states that atoms can only be produced naturally.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A scientist measures the mass and volume of an object as its temperature increased. If the object's mass did not change, but its volume did, which statement best explains the impact of increasing the object's temperature?

• the increasing of the temperature caused a physical change in the object

• the increasing of the temperature caused a chemical change in the object

• the increasing of the temperature caused an oxidation type of reaction

• the increasing of the temperature caused the object to boil

Tags

NGSS.MS-PS1-4

If a cell had all of its mitochondria removed, then this would most likely occur?

• the cell would produce too much glucose

• the cell would enlarge to store water

• Energy would not be created in the cell

• the chlorophyll could not capture light energy

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

Which organism would not be a part of a pond ecosystem?

• crayfish

• algae

• mosquito

• shark

In a food chain or food web, which of the following organisms will start the flow of energy through the ecosystem?

• scavengers

• producers

• omnivores

• herbivores

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following shows a correct food chain?

• owls/hawks

  -->snakes-->

  mice/rabbits-->

  grass/flowers

• grass/flowers

  -->snakes-->

  hawks/owls-->

  mice rabbits

• grass/flowers

  -->mice/rabbits-->

  snakes-->

  hawks/owls

• mice/rabbits-->

  hawks/owls-->

  grass-->snakes

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

To increase the potential energy of an object, you must increase its:

• speed, elasticity

• density, volume

• weight, density

• mass, height

Tags

NGSS.MS-PS3-2

How does density differ from other physical changes?

• it can be used to change the rectivity rates of other substance

• it can be used to identify an unknown substance

• it only changes if the substance's internal temperature changes

• it only changes if the substance's mass changes