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