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