Chemistry Final Exam S1 Review

490,000 g =____ kg

• 490
• 49
• 4,900
• 0.49

Tags

CCSS.5.MD.A.1

What is the basic unit of mass in the metric system?

• Liter

• Meter

• Gram

• Kilometer

Tags

CCSS.3.MD.A.2

Matter can not be created nor destroyed: it can only be

• Destroyed a little bit
• Invisible
• Transformed, changed
• None of the above

Tags

NGSS.HS-PS1-7

Students react baking soda & vinegar.
Which of the following would provide the evidence that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction?

• The mass of the plastic bag, baking soda, and vinegar before the reaction was equal to the mass after the reaction.
• Bubbles were produced during the reaction, which meant that a gas was being produced.
• The plastic bag did not change in any way, indicating that it was not involved in the reaction.
• The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.

Tags

NGSS.HS-PS1-7

Suppose a reaction were to happen in an open container in a lab. During the reaction, the scientist observes the chemicals bubble, and produce a gas. During the analysis the scientist notices that the reactants weighed 20 g when he started, and the product weighed 18 g. Explain what happened.

• His chemical reaction defied the law of conservation of mass

• The product destroyed mass during the reaction

• The reactants created matter during the reaction

• The gas that was produced was not able to be weighed since the container was open.

Tags

NGSS.HS-PS1-7

Which substance is the least dense? **Use the key 

• A
• B
• C

If an object has a density of 3.6 g/mL and you put it into water, will it sink or float?  

• sink
• float

What is the density of this substance?

• 5 grams
• 5 ml
• 5 g/ml
•  10 g/ml

Which lab tool might you use to measure the volume of a liquid?

• electric scale
• bunsen burner
• test tube
• graduated cylinder

What is the volume of Object X?

• 10.0 cm³
• 15.0 cm³
• 20.0 cm³
• 25.0 cm³