Two liquids are shaken together in a test tube to produce a mixture that quickly separates into two layers. Which of the following best describes the behavior of the above pair of substances? soluble insoluble miscible immiscible

True or false: atoms in each state of matter are always in motion

What is the oxidation number for Zn (OH) 4 2-?

Charge on Particle Sub Atomic Particle Charge A Negative B Neutral Based on the quantum model, which of the following correctly compares the location of the subatomic particles? Particle A is packed in the nucleus and Particle B is present in shells.

Chan hee is inflating a basketball using an air pump. he notices that the pump gets warm as he uses it. what is a good hypothesis that could lead to new experimentation?

How many liters of h2 gas, collected over water at an atmospheric pressure of 752 mmhg and a temperature of 21.0°c, can be made from 1.566 g of zn and excess hcl? the partial pressure of water vapor is 18.65 mmhg at 21.0°c?

Which of the following is an example of a chemical change? A bike rusting Mixing salt and pepper A brick breaking Gold melting

Which law is described by saying that doubling the absolute temperature will double the pressure of a sample of gas in a rigid container? Boyle's law Charles's law Dalton's law Gay-Lussac's law

The nucleus of an atom consists of a. neutrons and electrons. b. neutrons alone. c. protons and neutrons. d. protons and electrons.

What holds the two strands of a DNA molecule to each other?

1. Copper (__) is an element on the periodic table. CU (both letters capitalized) Cu (first letter capitalized) cU (second letter capitalized) cu (both letters lowercase)