Physical Science Benchmark Practice

Question 1

The number of protons in the atom is the?

Accepted Answer

Atomic number

Question 2

Hydrocarbons that have only single covalent bonds are called:

Accepted Answer

Alkanes

Question 3

Anions are ions with this kind of charge:

Accepted Answer

Negative

Question 4

Which of the following statements best describes a heterogeneous mixture?

Accepted Answer

A heterogeneous mixture does not have a fixed composition.

Question 5

Group 1 is also known as the:

Accepted Answer

Alkali Metals

Question 6

The Greek word that means unable to be divided:

Accepted Answer

Atomos

Question 7

21. Which Group of elements is the most stable?

Accepted Answer

Noble Gasse

Question 8

Which of the following statements describes a solid, liquid, and gas?

Accepted Answer

They can be classified by their shape and volume.

Question 9

29. Which compound or compounds is in the Product? 6 CO2 + 6 H2O + light → C​6H12O6 + 6 O2

Accepted Answer

O2

Question 10

The second valence shell of an element can hold how many electrons?

Accepted Answer

8

Question 11

1. What are the two main branches of physical science?

Accepted Answer

Physics and Chemistry

Question 12

Which is the correct form of .000065 m in scientific notation?

Accepted Answer

6.5 X 10-5m

Question 13

How are mass and energy affected by physical and chemical changes?

Accepted Answer

Mass and Energy can be converted to other forms.

Question 14

What happens during an exothermic reaction?

Accepted Answer

energy is released

Question 15

Which is NOT a physical property of matter

Accepted Answer

Flammability

Question 16

Why does a rubber duck float in your bathtub?

Accepted Answer

The rubber duck is less dense than the water.

Question 17

Why is water called the universal solvent?

Accepted Answer

Many substances dissolve in water including ionic and polar compounds.

Question 18

2. Which of the following quantities is measured using an SI base unit?

Accepted Answer

Mass

Question 19

The number of energy levels that are filled in an atom depends on the number of?

Accepted Answer

Electrons

Question 20

A Miscible Substance is?

Accepted Answer

Can be mixed with water

Question 21

13. Which law relates the temperature of a gas to its volume?

Accepted Answer

Charles Law

Question 22

17. Carbon has 6 electrons, how many valence electrons does it have?

Accepted Answer

4

Question 23

Why was Mendeleev&#x27;s table chosen over others?

Accepted Answer

predictability

Question 24

Why is difficult to preserve a pure sample of a radioactive element?

Accepted Answer

After every half-life, half the same will be a different element or isotope

Question 25

The protons and neutrons of the atom are located in the?

Accepted Answer

Nucleus

Question 26

Which of the following equations is balanced?

Accepted Answer

2Mg + O 2 → 2MgO

Question 27

Most reactions speed up when?

Accepted Answer

The reactant is in small pieces.

Question 28

What term describes the mass per unit volume of a substance?

Accepted Answer

Density

Question 29

What is solubility?

Accepted Answer

The maximum amount of a solute that will dissolve in a Sovent

Question 30

Which of the following statements is true?

Accepted Answer

Water into steam and gasoline into a gas are both physical changes.

Question 31

The temperature at Which a substance changes from a solid to a liquid is?

Accepted Answer

Melting Point

Question 32

How is the periodic table organized?

Accepted Answer

Atomic Number

Question 33

4. What can chemical formulas tell you about the compounds they represent?

Accepted Answer

They give the number and kinds of atoms in a molecule of the compound.

Question 34

Which compound or compounds is in the reactant? 6 CO2 + 6 H2O + light → C​6H12O6 + 6 O2

Accepted Answer

CO2

Question 35

The forces that hold atoms or ions together is called:

Accepted Answer

Chemical Bonds

Question 36

A bond formed between two oppositely charged Ions:

Accepted Answer

Ionic Bonds

Physical Science Benchmark Practice

Questions 36

Physical Science Benchmark Practice

Questions 36