Periodic Table
Periodic Families
Physical or Chemical? / Laws of Chemistry
Phases of Matter
Types of Matter
100

How many valence electrons does phosphorus (P) have?

5

100

Which noble gas is found in period 5?

Xenon (Xe)

100

Color

Physical property

100

Describe the shape and volume of a liquid. (definite/fixed or indefinite/unfixed)

The shape is indefinite, and the volume is definite.

100

Is iron (Fe) an element, compound, homogeneous mixture, or a heterogeneous mixture? Why?

Element - It is made of only one type of atom and can be found on the periodic table. 

200

What group and period does fluorine (F) belong to?

group 17, period 2

200

Which alkali metal is lightest?

Li - H is not an alkali metal.

200

Burning

Chemical change

200

How do solid particles move?

They vibrate in place.

200

Is baking soda (NaHCO3) an element, compound, homogeneous mixture, or a heterogeneous mixture? Why?

Compound - Multiple elements are chemically bonded together with a fixed ratio. 

300

What do elements in the same group have in common?

Number of valence electrons / properties

300

How many electrons are on the third energy level of a magnesium atom?

2

300

Corrosiveness

Chemical property

300

When liquid changes to gas

Vaporization

300

Is soda an element, compound, homogeneous mixture, or a heterogeneous mixture? Why?

Heterogeneous mixture - The liquid and the gas bubbles are visibly different and are made of two different states of matter. 

400

Would you expect sulfur (S) to have similar properties as chlorine (Cl) or oxygen (O)? Explain why.

Sulfur is more similar to oxygen because they are both in group 16, meaning they both have 6 valence electrons. This means they have similar properties. 

400

How many electrons are on the second energy level of a silicon atom?

8- Silicon has a full second energy level. The second energy level holds 8 electrons. 

400

Melting

Physical change

400

You remove an ice cube from your freezer and it melts. Draw and label a heating curve showing the temperature over time.

Your heating curve should show the temperature starting below 0C. Once the temperature reaches 0, there should be a flat line showing that temperature stayed the same during melting. The temperature should then continue to increase.

400

Is an alloy an element, compound, homogeneous mixture, or a heterogeneous mixture? Why?

Homogeneous mixture - An alloy is a mixture because it is a physical combination of metals with an unfixed ratio. It is homogeneous because you cannot see the difference between the metals. 

500

What do elements in the same period have in common?

Number of energy levels

500

What happens to atomic radius as you more down the periodic table? Why?

Atomic radius increases as you move down the periodic table. With each new period, a new energy level is added, meaning the valence electrons are farther away from the nucleus and the atom is bigger. 

500

Solubility

Physical property

500

What are two differences between evaporation and boiling?

Evaporation happens at any temperature, but only at the surface of the liquid. 

Boiling happens at the boiling point all throughout the liquid.

500

What are two major differences between a compound and a mixture?

Mixtures can be physically separated, and compounds cannot. A compound has a fixed ratio, and a mixture does not.
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