A) any substance that has a definite composition B) any substance that is not alive C) a toxic substance D) an unnatural additive placed in food
A) the chemistry of living things B) mathematical modeling C) non-carbon related compounds D) the identification of the composition of materials
A) crystals and minerals B) the chemistry of living things C) carbon-containing compounds D) properties, changes, and relationships between energy and matter
A) in order go learn basic information B) only to make money C) long after the basis research is complete D) by accident
A) to solve a particular problem. B) to understand an environmental problem C) to develop new products D) to gain knowledge
A) by accident B) to learn basic information C) to solve a particular problem D) in order to make money
A) volume B) mass C) density D) amount of energy
A) taking up space and having mass B) being malleable and ductile C) being brittle and hard D) the ability to carry an electric current well and to hold electric charge
A) always made of carbon B) the smallest unit of matter that maintains its chemical identity C) smaller than an electron D) the smallest unit of a compound
A) volume B) weight C) mass D) density
A) air B) light C) water vapor D) smoke
A) mass is determined by comparing the mass of an object with a set of standard masses that are part of a balance B) as the force of Earth's gravity on an object increases, the object's mass increases C) mass is expressed in pounds D) mass if often measured with a spring scale
A) grinding B) boiling C) cutting D) burning
A) rusting B) melting C) igniting D) burning
A) products B) reactants C) synthetics D) equilibria |