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) the identification of the composition of materials B) non-carbon related compounds C) the chemistry of living things D) mathematical modeling
A) crystals and minerals B) carbon-containing compounds C) properties, changes, and relationships between energy and matter D) the chemistry of living things
A) only to make money B) by accident C) long after the basis research is complete D) in order go learn basic information
A) to develop new products B) to solve a particular problem. C) to gain knowledge D) to understand an environmental problem
A) by accident B) in order to make money C) to learn basic information D) to solve a particular problem
A) density B) mass C) volume D) amount of energy
A) being malleable and ductile B) taking up space and having mass C) being brittle and hard D) the ability to carry an electric current well and to hold electric charge
A) the smallest unit of a compound B) always made of carbon C) smaller than an electron D) the smallest unit of matter that maintains its chemical identity
A) weight B) volume C) density D) mass
A) water vapor B) smoke C) light D) air
A) mass if often measured with a spring scale 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) as the force of Earth's gravity on an object increases, the object's mass increases
A) grinding B) cutting C) burning D) boiling
A) igniting B) burning C) rusting D) melting
A) reactants B) synthetics C) products D) equilibria |