Answer:
The term "three-dimensional learning" refers to the three pillars that support each standard, now called "performance expectations." These three dimensions are: Science and Engineering Practices, Crosscutting Concepts, and Disciplinary Core Ideas. You can use this rubric to evaluate your own curriculum for NGSS.
Explanation:I HOPE IT HELP
Answer:
Dmitri Mendeleev
Explanation:
Dmitri Mendeleev published the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties of unidentified elements that were expected to fill gaps within the table. Most of his forecasts proved to be correct
Answer: The empirical formula is C₃H₃O.
Explanation: Assume we have 100 g of the compound. Then we have 65.65.5 g of C, 5.5 g of H, and 29.0 g of O.
A sample of nickel has a mass of 63.25 g and occupies a volume of 7.0 cm. What is its density?
Answer:
9.04g/cm³
Explanation:
Given parameters:
Mass of nickel = 63.25g
Volume of the nickel = 7.0cm³
Unknown:
Density of the nickel = ?
Solution:
Density is a physical quantity. It is an intensive property of matter because all samples of given matter will have distinct density value.
Density is the mass per unit volume of a substance;
Density =
Insert the parameters and solve;
Density = = 9.04g/cm³