What is matter?

a. matter is an element
b. matter is anything that is made of atoms and that has mass
c. matter is a compound
d. matter is anything that is made of organic substances and is found on the earth

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

In which of the following is positive work done by a person on a suitcase

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?