Ps1

What is melting?

• a change from liquid to solid

• a change of smell

• a change from solid to liquid

• a change of amount of solute

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the definition of dissolve?

• A phase of matter with a definite shape and volume

• Describes how hot or cold something is

• A phase of matter that has a definite volume and takes the shape of its container

• Anything that has mass and takes up space

• When a substance is evenly distributed throughout another substance

In some mixtures, the physical properties of the ingredients ___________ when they are mixed together.

• stay the same

• change

• glow

• evaporate

Tags

NGSS.MS-PS1-2

Students collected data on four substances. If the same students were then given a mystery substance made of tan crystals that dissolves in water, it could be –

• Corn starch

• brown sugar

• white sand

• sand

Tags

NGSS.MS-PS1-2

A science class performed an investigation by evaporating a solution containing 10g of salt and 50ml of water.  How much salt would you expect to find in the cup at the end of the investigation?

• 60g

• 50g

• 10g

• 5g

Which of these grouping of elements could have the characteristic of luster (shiny)?

• Metal

• Nonmetal

• metalloids

• Both metals and metalloids

Which of these is a property of metals?

• It's malleable

• It can't conduct electricity

• They are used in food

• It's very brittle

If a material can easily be drawn into the shape of a wire, it is

• Ductile

• Magnetic

• Malleable

• Reactive

The table shows the properties of four elements. Which element in the table is classified as a metal?

• Manganese

• Sulfur

• Silicon

• Neon

The smallest part of an element that still has the properties of the element is called an __________.

• atom

• molecule

• Adam

• compound

Tags

NGSS.MS-PS1-1