Chemistry Unit 1 Test

The (electron/proton) is the part of the atom found outside the nucleus.

• electron
• proton

The neutrally charged atomic particle is called the (neutron/electron).

• neutron
• electron

A proton has a (negative/positive) charge.

• negative
• positive

The (Atomic Mass/ Atomic Number)is the sum of protons and neutrons in one atom.

• Atomic Mass
• Atomic Number

The number of (neutrons/electrons) is always the same as the number of protons in a neutral atom.

• neutrons
• electrons

The (Atomic Mass/ Atomic Number) is equal to the number of protons of one atom.

• Atomic Mass
• Atomic Number

Elements and compounds are (mixtures/ pure substances).

• Mixtures
• Pure substances

(Compounds/atoms) are the smallest units of matter.

• Compounds
• Atoms

Tags

NGSS.MS-PS1-1

A(n) (element/mixture) is a substance made up of only one kind of atom.

• Element
• Mixture

(Liquid/Solid) is a state of matter with a definite shape and volume.

• Liquid
• Solid

Tags

NGSS.MS-PS3-4