Physical Science EOG Review

How are elements ordered in the modern periodic table?

• by date of discovery

• by decreasing atomic mass

• by increasing atomic number

• by alphabetical order of element symbols

Properties such as magnetism, luster, and malleability have been used to group together which category of elements on the periodic table?

• metals

• nonmetals

• metaloids

• noble gases

What general category describes the majority of the elements in the periodic chart?

• metals

• liquids

• nonmetals

• gases

Which is a balanced chemical equation according to the law of conservation of mass?

• CH₄ + O₂ ---> CO₂ + 2H₂O

• CH₄ +2O_{2 ---->} CO₂ + 2H₂O

• 2CH₄ + O₂ ----> CO₂ + 2H₂O

Tags

NGSS.MS-PS1-5

A chemical reaction occurs in a sealed test tube. As the results of the reaction 24 grams of product are produced. Which is most likely true?

• The mass of the reactants was 24 grams

• The mass of the reactants was less than 24 grams

• The mass of the reactants was more than 24 grams

Tags

NGSS.MS-PS1-5

Which is true of any physical or chemical reaction?

• Mass increases

• Mass fluctuate

• Mass is conserved

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

a _____ is two or more substances that have been physically combined

• compound

• element

• mixture

• atom

A student passes a magnet over 10 grams of a powder. Four grams of the powder stick to the magnet, while 6 grams do not. Which of these identifies the substance?

• element

• compound

• mixture

• solution

The compound potassium sulfate, K₂SO_4, is composed of

• 2 atoms of potassium, 1 atom of sulfur, and 4 atoms of oxygen.

• 2 atoms of potassium, 4 atoms of sulfur, and 4 atoms of oxygen.

• two molecules of potassium and one molecule of sulfate.

• one molecule of potassium and two molecules of sulfate.

Tags

NGSS.MS-PS1-1

A student studies four chemicals in a laboratory investigation. Which chemical cannot be further broken down into other chemicals using ordinary laboratory processes?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5