Science Review

What is 3.68 x 10³ as a number? 

• 36,800,000
• 368
• 3,680
• 36,800

Which is an example of a compound?

• Kool-Aid
• Water (H₂O)
• Aluminum (Al)
• Air

Tags

NGSS.MS-PS1-1

What happens as a gas is cooled?

• The motion of the particles do not change
• The motion of the particles increase in speed
• The motion of the particles decrease in speed
• none of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Convert 12 kilograms to grams. 

• 12,000 grams
• 120 grams
• 0.00012 grams
• 0.12 grams

When a metal bonds with a nonmetal, what type of bond is formed?

• ionic bond
• covalent bond
• metallic bond
• electron bond

How is the modern model of an atom different from the Bohr model?

• the atomic mass is different
• the electron arrangement is different
• the nucleus is different
• they are the same

Where is most of the mass of an atom located?

• electron cloud
• in the nucleus
• in the electrons
• throughout the atom

When a nonmetal bonds with a nonmetal, what type of bond is formed?

• covalent bond
• ionic bond
• metallic bond
• electron bond

Where are the metals on the periodic table?

• on the left
• on the right
• on the top
• they are not there

Is this balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!
• NO!