First 20 Elements, Compounds, Mixtures, & Phys / Chem prop/changes

Density describes a __________ property.

• chemical

• physical

• mixture

• compound

If a substance reacts violently with chlorine it is _______ property.

• chemical

• physical

• mixture

• element

To burn gasoline is a __________ change.

• chemical

• physical

• unknown

• hazzard

Chocolate melts at 192⁰ F and this is a ________ property.

• chemical

• physical

Melting ice is a _________ change.

• chemical

• physical

• solid

• liquid

Grinding chalk into powder is a __________ change.

• chemical

• physical

• solid

• gas

Which element has an atomic number of 16?

• Nitrogen

• Sulfur

• Chlorine

• Argon

Which element has a C as their symbol?

• Calcium

• Carbon

• Chlorine

• Copper

What element follows N & O ?

• Fluorine

• Chlorine

• Neon

• Sodium

What element follows Na, Mg, & Al?

• Boron

• Sulfur

• Silicon

• Nitrogen