Final Exam Review- Mia and Vika

• 26g

• 50g

• 32g

• 20g

3a.

Colton is making an experiment about Law Of Conservation and Mass. The bottle was 12g, 30g of baking soda, 18g of lemon juice, and a balloon thats 10g. When he mixes baking soda and lemon juice he quickly puts the balloon over so NONE of the gas escapes. How much grams did the whole experiment weigh?

• 65g because some of the gas left

• 70g because the balloon captured all the gas- Law Conservation Of Matter

• 75g because the extra gas added to the weight

• Can't calculate

6a.

Coffee is made with water and coffee beans and sugar. Which is the solute and which is the solvent?

• Solvent: Sugar

  Solute: Water and Coffee

• Solvent: Water and Sugar

  Solute: Coffee

• Solvent: Water

  Solute: Sugar and Coffee

• Solvent: Coffee

  Solute: Water and Sugar

6b.

Sabrina and Jared are melting sugar in water. Jared puts one sugar cube in warm water. It melts pretty slow, what is the BEST way for Sabrina to melt the sugar faster?

• Cool down the water and break the sugar cube into smaller pieces

• Heat up the water and stir

• Put ice in the water and stir

• Heat up the water, break the sugar cube into smaller and stir

6c.

Based on the graph what is the solubility of solid B at 80° in 100g of water?

• 30g

• 35g

• 40g

• 45g

1c. How many valence electrons does the halogen group have?

• 46

• 28

• 14

• 7

1a. What has a positive charge and is found in the nucleus?

• Electron

• Proton

• Neutron

• None

2b. Is a cation a positively charged ion?

• Yes

• No

2b. Is an anion negatively charged ion?

• Yes

• No

Lemon juice has a pH level of 2. If pH level is less than 7 the ingredient is considered a...?

• Acid

• Base