OpenSciEd

A teacher poured 3 liquids into a glass. Then the teacher added 3 objects to the glass. The diagram shows where each substance stopped. Which liquid is most likely corn syrup?

• Liquid Z because corn syrup is more dense than water

• Liquid Y because corn syrup is more dense than water

• Liquid Y because corn syrup is less dense than water and more dense than a sponge

• Liquid Z because corn syrup is less dense than water

Tags

NGSS.MS-PS1-2

A rock with a mass of 70 grams is dropped into a graduated cylinder with 30 mL of water in it. The water level rose as shown. Calculate the density of the rock in g/mL. The density of the rock is (a)  

• 14 g/mL

• 30 g/mL

• 70 g/mL

• 5 g/mL

Tags

NGSS.MS-PS1-2

Benjamin is conducting an experiment in his science class. What property describes how easily the materials he is testing can catch fire?

• Solubility

• Density

• Flammability

• Viscosity

During a science experiment, Nora observed the curve at the surface of a liquid in a graduated cylinder. What is this curve called?

• Meniscus

• Atom

• Molecule

• Reactant

Hannah and Grace are in a science class learning about chemistry. What do you call a group of two or more atoms bonded together?

• Meniscus

• Chemical Reaction

• Molecule

• Phase Change

Tags

NGSS.MS-PS1-1

Kai is conducting an experiment in the lab where he mixes vinegar and baking soda. What is the process called where these substances change into different substances with new properties?

• Chemical Reaction

• Phase Change

• Odor

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is this in molecular formula?

• 3water

• 3H₂O 

• H3O3

• 3O6H

Tags

NGSS.MS-PS1-1

Which model of matter is most likely a liquid? 

• A

• B

• C

Tags

NGSS.MS-PS1-4

Which thing in this picture represents a gas? 

• ice cubes

• bubbles 

• soda

Tags

NGSS.MS-PS1-4

The substances at the beginning of a chemical equation (to the left of the arrow) are called the ____

• product

• yield

• chemical symbol

• reactants

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5