Which two particles have approximately the same mass?

(1) proton and neutron

(2) proton and electron

(3) neutron and electron

(4) neutron and positron

During the phase change from solid ice to liquid water, which bonds/forces are being weakened?

You are holding a container of 28.7L of dinitrogen tetroxide. How many grams of gas are inside? Step by step.

Karen has discovered a new organism in the Amazon Rainforest. It moves by itself, is a consumer, and its cells do not have a cell wall. In what Kingdom would this newly discovered organism belong? A) Amazon B) Animalia C) Fungi D) Plantae

Which of the following is an example of a species changing over time. Choose all answers that are correct. A. A gardener notices a new kind of squash growing after he only planted seeds from his previous squash plants. B.

When an aluminum cube of edge 0.100 m and temperature T0 = 5.00°C is submerged in a bucket of water, the level of the water rises right up to the rim of the bucket. What would happen if the aluminum cube were first warmed to 85.

In what layer of the skin is melanin found? What does melanin do for skin cells?

An exothermic reaction?

How many atoms of Fluorine are in 595.85g of SeO2F2? A: 6.02 x 10^23 B: 1.204 x 10^24 C: 2.408 x 10^24 D: 4.816 x 10^24

Describe how NH3 and CF4 satisfies the octet for all atoms.

What two items must be equal for a nuclear equation to be balanced?