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Classification of Matter
Counting Atoms
Law of Conservation of Mass
Dont be so basic, but sadly no acid trip here.
Random
100

This substance is made of two or more different elements

Compound

100

In the molecule 3CH4, how many hydrogen atoms are there?

12 hydrogen atoms

100

Who is credited with formulating the Law of Conservation of Mass?

Antoine Lavoisier

100

What is the range of the pH scale?

0-14

100

What are the names of the 8th grade science teachers?

Mrs Whaley, Mr LeBlanc
200

What is the difference between a homogeneous and a heterogeneous mixture?

Homogeneous = evenly distributed (uniform)

Heterogeneous = not evenly distributed

200

What is the total number of atoms in the compound C₆H₁₂O₆ (glucose)?

24 atoms

200

What does the Law of Conservation of Mass state?

Mass is neither created nor destroyed, just rearranged. In an equation it has to be equal on both sides.

200

What property of water allows an insect to walk on water?

Surface tension

200

How many letter are in the alphabet?

26 letters

300

H2 + O2 → H2O

Which of these BEST describes oxygen (O) in the reactant

Element

300

How many hydrogen (H) atoms are in TWO molecules of acetic acid, CH₃COOH?

8 atoms

300

Does the equation follow the law of conservation of mass? CH4 + O2 → CO2 + 2H2O

No

300

Water sticks to other materials.

Adhesion

300

Name a famous scientist

Answers Vary
400

What do you call a substance that cannot be broken down into a simpler substance?

Element

400

Which elements and how many atoms of each element are present in this formula Ca(NO3)2?

Calcium = 1

Nitrogen = 2

Oxygen  = 6

400

If 10 grams of reactants are used, what will be the mass of the products according to the law of conservation of mass

10 grams

400

Allows water molecules to stick together.

Cohesion

400
Mrs Whaley's brother has an unused world series blue jays ticket signed by Kelly Gruber for what year?

1992

500

Kelly's salad has lettuce, olives, and cheese mixed with a fork and for her milkshake she mixed strawberries, milk and sugar in the blender. Is her salad and milkshake heterogeneous or homogeneous mixture?

Salad: Heterogeneous

Milkshake: Homogeneous

500

What does the subscript tell us in a chemical formula?

The number of atoms for the element

500

Does this equation follow the law of conservation of mass? 6CO2 + 6H2O → C6H12O6 + 6O2

Yes

500

1. A pH of 7 is _________.

2. Anything below a pH of 7 is ________.

3. Anything greater than a pH of 7 is _________.

1. Neutral

2. Acid

3. Base

500

When is your chapter 2 science test?

depends on the class