Open Scied 7.1

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

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

During a science experiment, Zoe observed a substance changing from a solid to a liquid. What is this process called?

• Chemical Process

• Phase Change

• Reactant

• Meniscus

Tags

NGSS.MS-PS1-4

In a science experiment, William mixed two chemicals in a beaker. What is the substance formed as a result of this chemical reaction?

• Reactant

• Product

• Molecule

• Meniscus

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The three states of matter are:

• solid, gas, energy

• gas, liquid, solid

• plasma, liquid, energy

How many atoms of sodium are in this molecule?

• 3

• 6

• 5

• 0

Tags

NGSS.MS-PS1-1

When you combine citric acid, baking soda, and water...

• Atoms randomly change into different atoms

• Hydrochloric acid is released

• Argon gas is released

• the molecules rearrange into new substances

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If a substance is less dense than water it will...

• float

• sink

• combine with water