practice of science
what are some lab rules
wear safety goggles, never leave anything unattended, no food or drinks in the lab
What are terms for rows and columns on the periodic table
Periods and the columns are called groups
what causes matter to change states
matter loses or absorbs energy
what are two types of matter
physical change and chemical change
what is one of the reactants for cellular respiration
glucose
is pseudoscience real science
pseudoscience theories lack the substance of science
elements arranged in vertical columns in the periodic table are called periods True or False
False
what is an element
what is the change of matter from liquid to solid
freezing
in cellular respiration energy can be released by breaking down which molecule
glucose
what is pseudoscience
Pseudoscience is a body of knowledge that does not use scientific methods to investigate natural phenomena or explain how things work
every atom of the same element has the same atomic number True or False
True
how is a chemical change different than a physical change
in a chemical change there is a change in the substance. in a physical change there is a difference in the appearance
what is the change of matter from solid to gas
sublimation
what is cellular respiration
oxygen is combined with carbon in a cell to form carbon dioxid
A certain atom has 26 protons, 26 electrons and 30 neutrons. what is its mass number?
56
Explain the difference between a heterogeneous and homogeneous mixture
Homogenous mixture has the two substance spread evenly. A heterogeneous mixture with a non-uniform composition
what is the change of matter from gas to liquid
condensation
difference photosynthesis and cellular respiration
photosynthesis captures energy while cellular respiration releases energy