CASPP Prep

Leah is learning to use properties of substances to identify a chemical reaction. She conducts two trials. In the first trial, she pours silicon dioxide (SiO2) into water (H2O). For the second trial, she pours silver nitrate (AgNO3) solution into a test tube with a solution of potassium chloride (KCl). Look at the diagram. In which trial did a chemical reaction occur?

• Trial 1

• Trial 2

• Both trial 1 and trial 2

• No chemical reaction happened in either

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Leah is learning to use properties of substances to identify a chemical reaction. She conducts two trials. In the first trial, she pours silicon dioxide (SiO2) into water (H2O). For the second trial, she pours silver nitrate (AgNO3) solution into a test tube with a solution of potassium chloride (KCl). Look at the diagram. Leah knows a chemical reaction occurred in Trial 2 because

• a substance with a new properties was made (new white solid)

• the same substances remained

Tags

NGSS.MS-PS1-2

Leah conducts two trials to mix chemicals together. What is true about the products of the reaction?

• W is a solid substance

• X is a liquid substance

• Z ia s white solid substance

• Y is a solid substance

Tags

NGSS.MS-PS1-2

Leah records properties of the substances she mixed before and after the trials. Which property or properties show that a chemical reaction occurred?

• State of matter ONLY

• Mass

• Color ONLY

• Both state of matter and color

Tags

NGSS.MS-PS1-2

Leah made a model of the reaction between Iron and Copper Sulfate. However, it needs improvements. Which statement best describes which improvements need to be made?

• The mass of the reactants does not equal the mass of the products.

• The number of atoms for the reactants is different than the products

• The number of atoms for the reactants is the same as the products

• The composition of atoms for the reactants is different than the products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

According to this model, is the chemical reaction balanced?

• Yes

• No

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

According to this model, Fe, or Iron, is represented by

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

According to this model, what are the products made from the chemical reaction?

• Fe

• CuSO₄

• Cu

• FeSO₄

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the chemical formula for water?

Tags

NGSS.MS-PS1-1

Which of the following is a renewable energy source?

• Coal

• Natural Gas

• Solar Energy

• Nuclear Energy