1. How do scientists know how hot the core is?
A. Thermometers
Seismic waves
C. Oil wells
D. Measure the electromagnetic
spectrum

For each of the following mixtures decide if filtering would be suitable to separate the substances. explain your answers. oil in water sugar in water sand in water chalk in water tea leaves in a cup of tea

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

How can you use chemical equations to predict the products of the reaction you can carry out?