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