Performance Exam_AA_2025

Substance 5 is mixed with an aqueous solution of substance 6 in a beaker. Fizzing occurs and a black substance is observed at the bottom of the beaker. Zinc Chloride and hydrogen gas are the products. What evidence is provided in this scenario that proves that a CHEMICAL reaction occurred?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When aqueous solutions of substance 1 and 3 are mixed, calcium fluoride and a white solid appears. What evidence is provided in this scenario that proves a CHEMICAL reaction occurred?

Tags

NGSS.MS-PS1-2

List the names of 3 COVALENT substances in the chart.

List the names of 3 IONIC substances in the chart.

Tags

NGSS.HS-PS1-3

Write the formula for 2 ionic substances in the chart.

List three PHYSICAL properties indicated in the chart,

Tags

NGSS.HS-PS1-3

List two CHEMICAL properties indicated in the chart,

Tags

NGSS.HS-PS1-3

NGSS.HS-PS1-1

What coefficients would balance the reaction between substance 6 and 7 and
What type of reaction is it ?
?AlF₃ + ?CaSO₄ → ?Al₂(SO₄)₃ + ?CaF₂

• 2, 3, 1, 3

• 1, 3, 2, 1

• 1, 1, 2, 3

• single replacement

• double replacement

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What coefficients would balance reaction between substance 5 and 6 and
What type of reaction is it?
?Zn + ?HCl → ?ZnCl₂ + ?H₂

• 2, 1, 1, 2

• 1, 2, 1, 1

• 1, 1, 1, 2

• double replacement

• single replacement