Science Review

An evenly mixed mixture containing a solvent and at least on solute with the same properties is called what?

• solution

• mixture

• compound

• element

What is the smallest part of an element?

• element

• atom

• matter

• mass

The class received a plan to classify white powders.

Which of the following is the best way to begin the classification?

• Separate the powders based on electrical conductivity.

• Separate the powders based on color.

• Separate the powders based on size of the grains.

• Separate the powders based on color.

What two particles compose the nucleus of an atom?

• neutron and electron

• proton and electron

• neutron and proton

• positive and negative

Tags

NGSS.MS-PS1-1

What happens when a baker

combines cake mix, eggs, water, and

cooking oil and bakes a cake?

• The substances make a

  compound that can be

  separated by sifting.

• The substances make a

  solution that can be

  separated with filter paper.

• The substances make a

  mixture and can be easily

  separated.

• The substances make a new

  substance that cannot easily

  be separated.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Surface area does not affect how much of a solute will be dissolved, but it is a factor ______. As you crush a solid into smaller particles, you are increasing surface area.

• in how much of a solute will be dissolved

• in how quickly or slowly the solute will be dissolved

• in the temperature of the solute

• in the rate at which the solute is stirred

Molecules of compounds have two or

more different elements. Water

(H2O) is a compound. What is

the correct number of atoms in one

water molecule?

• three hydrogen atoms and

  three oxygen atoms

• two hydrogen atoms and two

  oxygen atoms

• one hydrogen atom and two

  oxygen atoms

• two hydrogen atoms and one

  oxygen atom

Tags

NGSS.MS-PS1-1

What happens when oil is placed in water?  

• Some oil sinks below the surface. 

• Oil droplets form in the water.

• The oil and water mix together.

• The oil floats on top of the water.

Which of these statements is true about the parts  that make up the atom? 

• Protons are larger than neutrons.

•  Electrons have a positive charge. 

• Electrons are inside the nucleus. 

• Neutrons have no charge.

Tags

NGSS.MS-PS1-1

A student pours water from a bucket into a fish tank. As the water fills the tank, which of these  will MOST likely happen? 

• The tank will decrease in mass.

• The bucket will increase in volume. 

• The water will become a different color.

•  The water will take on a different shape.