Practice Benchmark 1

The basic unit of all matter is a(n)

• atom
• element
• cell
• molecule

Tags

NGSS.MS-PS1-1

Match the following electrical charges to the correct subatomic particle.

• proton

• 0

• electron

• +

• neutron

• -

Which of these is the best definition of a compound?

• two or more substances that maintain their separate identities when they are combined

• a substance that is the same throughout but which can be separated by normal physical means

• a pure substance formed by two or more elements that are chemically combined to form a new substance

• a substance that cannot be broken down into a simpler substance by ordinary chemical means

Tags

NGSS.MS-PS1-1

A ​ (a)   only changes the appearance of an object, while a ​ (b)   forms a new substance. ​ (c)   is an example of a physical change of matter, but ​ (d)   is an example of a chemical change.

• physical change
• chemical change
• slicing an apple
• baking an apple pie

Sort the elements from the compounds

Groups:

(a) Elements

,

(b) Compounds

• O2

• H

• OH

• Na

• NaCl

• H2O

• He

• CO2

Tags

NGSS.MS-PS1-1

The chart shows common minerals and their chemical composition. According to the chart, which mineral is also an element?

• graphite

• quartz

• calcite

• hematite

Tags

NGSS.MS-PS1-1

Label the atom

c

d

e

a

b

proton

neutron

electron shell

electron

nucleus

Tags

NGSS.MS-PS1-1

An atom of Zinc has

​ (a)   protons​, (b)   electrons, and ​ (c)   neutrons

• 30
• 35
• 65
• 70
• 36

Tags

NGSS.MS-PS1-1

Water is called the universal solvent because-

• it dissolves many things

• it exists as all three states of matter

• it is polar

• it can stick to other thing

Which substance would least likely dissolve in water

• 
• 
• 
•