U1B Mid review

A substance that gets dissolved is called

• Solution

• Solid

• Solvent

• Solute

A mysterious object has a density of 0.93 g/cm3. If it is placed in water, it will....

• Sink because it has lower density than water

• Sink because it has higher density than water

• Float because it has lower density than water

• Float because it has higher density than water

True or false: Density is always higher in solid (frozen) form than liquid form

• True!

• False!

Tags

NGSS.MS-PS1-4

Water likes to stick to itself causing exceptionally high surface tension. This is due to...

• Cohesion

• Adhesion

• Buoyancy

• Erosion

When two or more types of elements are chemically bonded, it is called....

• Element

• Compound

• Mixture

• Atom

Tags

NGSS.MS-PS1-1

When a mixture is uniform from top to bottom, it is called...

• Heterogeneous

• Compound

• Element

• Homogeneous

A ________ has suspended microscopic particles and exhibits Tyndall effect.

• compound

• colloid

• solution

• mixture

A mixture of sand and water is an example of....

• Homogeneous mixture

• Heterogeneous mixture

• Element

• Compound

What two types of particles are located in nucleus?

• Protons and electrons

• Electrons and neutrons

• Neutrons and positrons

• Neutrons and protons

Tags

NGSS.MS-PS1-1

What is the overall charge of nucleus?

• Positive

• Negative

• Neutral

• Unknown. It depends.

Tags

NGSS.MS-PS1-1