Which of these is an example of physical change?

1) water evaporates

2) gasoline ignites

3) a nail rusts

4) wood rots

Which organelle is like the brain cell? a) vacuole b) endoplasmic reticulum c) cytoplasm d) nucleus

What are ways heat can spread

did the data support Martha's hypothesis? Use evidence to explain why or why not. if you feel the data were inconclusive, explain why.

Qual é a diferença entre um a corrente elétrica e a diferença potencial elétrica?

A student is trying to solve the following problem by selecting the tile shown. Mass of container Which of the following statements is true? A. The student chose the wrong tile to solve the problem. B.

Molar mass of 34.00 g/mol molecular formula

In CO which element holds electron more tightly

Copper is composed of two naturally occurring isotopes: Cu-63 (69.170%) and Cu-65. The ratio of the masses of the two isotopes is 1.0318. What is the mass of Cu-63?

The measurement describes the area of solid object a. 25mm b. 23c c. 25cm2 d. 25cm3

The face-centered gold crystal has an edge length of 407 pm. based on the unit cell, calculate the density of gold.