diff --git a/js/balloons-and-static-electricity/model/BalloonModel.js b/js/balloons-and-static-electricity/model/BalloonModel.js
index 8e4bcdca..2dec25e5 100644
--- a/js/balloons-and-static-electricity/model/BalloonModel.js
+++ b/js/balloons-and-static-electricity/model/BalloonModel.js
@@ -306,7 +306,7 @@ class BalloonModel {
     this.isDraggedProperty.lazyLink( isDragged => {
 
       // When the user starts dragging a balloon, set its non-dragging velocity to zero.
-      if ( isDragged ){
+      if ( isDragged ) {
         this.velocityProperty.set( Vector2.ZERO );
       }
 
diff --git a/js/balloons-and-static-electricity/model/SweaterModel.js b/js/balloons-and-static-electricity/model/SweaterModel.js
index ea54937f..c26cc268 100644
--- a/js/balloons-and-static-electricity/model/SweaterModel.js
+++ b/js/balloons-and-static-electricity/model/SweaterModel.js
@@ -150,8 +150,8 @@ class SweaterModel {
     this.plusCharges = [];
     this.minusCharges = [];
 
-    const plusChargesGroupTandem = tandem.createTandem('plusCharges').createGroupTandem( 'plusCharge' );
-    const minusChargesGroupTandem = tandem.createTandem('minusCharges').createGroupTandem( 'minusCharge' );
+    const plusChargesGroupTandem = tandem.createTandem( 'plusCharges' ).createGroupTandem( 'plusCharge' );
+    const minusChargesGroupTandem = tandem.createTandem( 'minusCharges' ).createGroupTandem( 'minusCharge' );
     CHARGE_PAIR_POSITIONS.forEach( chargePairPosition => {
       const plusCharge = new PointChargeModel(
         chargePairPosition.x,
diff --git a/js/balloons-and-static-electricity/view/BalloonRubbingSoundGenerator.js b/js/balloons-and-static-electricity/view/BalloonRubbingSoundGenerator.js
index e624e26a..7e5044d0 100644
--- a/js/balloons-and-static-electricity/view/BalloonRubbingSoundGenerator.js
+++ b/js/balloons-and-static-electricity/view/BalloonRubbingSoundGenerator.js
@@ -72,7 +72,7 @@ class BalloonRubbingSoundGenerator extends NoiseGenerator {
     Property.multilink(
       [ smoothedSpeedProperty, onSweaterProperty, touchingWallProperty ],
       ( smoothedDragSpeed, onSweater, touchingWall ) => {
-        if ( smoothedDragSpeed > 0 && ( onSweater || touchingWall ) ){
+        if ( smoothedDragSpeed > 0 && ( onSweater || touchingWall ) ) {
 
           // Start the production of the sound if needed.
           if ( !this.isPlaying ) {
diff --git a/js/balloons-and-static-electricity/view/BalloonVelocitySoundGenerator.js b/js/balloons-and-static-electricity/view/BalloonVelocitySoundGenerator.js
index ddb6dd74..9a80a606 100644
--- a/js/balloons-and-static-electricity/view/BalloonVelocitySoundGenerator.js
+++ b/js/balloons-and-static-electricity/view/BalloonVelocitySoundGenerator.js
@@ -58,32 +58,32 @@ class BalloonVelocitySoundGenerator extends SoundClip {
     const outputUpdaterMultilink = Property.multilink(
       [ balloonVelocityProperty, touchingWallProperty ],
       ( balloonVelocity, onSweater, touchingWall ) => {
-      const speed = balloonVelocity.magnitude;
-      if ( speed > 0 && !touchingWall ) {
-        if ( !this.isPlaying ) {
-
-          // Before starting playback, set the playback rate immediately, otherwise there can be a bit of the "chirp"
-          // sound.
-          this.setPlaybackRate( mapSpeedToPlaybackRate( speed, 0 ) );
-
-          // Start the sound playing.
-          this.play();
+        const speed = balloonVelocity.magnitude;
+        if ( speed > 0 && !touchingWall ) {
+          if ( !this.isPlaying ) {
+
+            // Before starting playback, set the playback rate immediately, otherwise there can be a bit of the "chirp"
+            // sound.
+            this.setPlaybackRate( mapSpeedToPlaybackRate( speed, 0 ) );
+
+            // Start the sound playing.
+            this.play();
+          }
+          else {
+
+            // Set the playback rate.  This will use the nominal time constant, which should lead to a reasonably smooth
+            // transition of the rate as the velocity changes.
+            this.setPlaybackRate( mapSpeedToPlaybackRate( speed ) );
+          }
+
+          // Set the output level based on the velocity.
+          this.setOutputLevel( mapSpeedToOutputLevel( speed, 0.1 ) * options.maxOutputLevel );
         }
-        else{
-
-          // Set the playback rate.  This will use the nominal time constant, which should lead to a reasonably smooth
-          // transition of the rate as the velocity changes.
-          this.setPlaybackRate( mapSpeedToPlaybackRate( speed ) );
+        else if ( ( speed === 0 || touchingWall ) && this.isPlaying ) {
+          this.stop();
+          this.setOutputLevel( 0 );
         }
-
-        // Set the output level based on the velocity.
-        this.setOutputLevel( mapSpeedToOutputLevel( speed, 0.1 ) * options.maxOutputLevel );
-      }
-      else if ( ( speed === 0 || touchingWall ) && this.isPlaying ) {
-        this.stop();
-        this.setOutputLevel( 0 );
-      }
-    } );
+      } );
 
     this.disposeBalloonVelocitySoundGenerator = () => {
       outputUpdaterMultilink.dispose();
@@ -94,7 +94,7 @@ class BalloonVelocitySoundGenerator extends SoundClip {
    * release memory references
    * @public
    */
-  dispose(){
+  dispose() {
     this.disposeBalloonVelocitySoundGenerator();
     super.dispose();
   }
diff --git a/js/balloons-and-static-electricity/view/WallNode.js b/js/balloons-and-static-electricity/view/WallNode.js
index bdb4be5f..508baa53 100644
--- a/js/balloons-and-static-electricity/view/WallNode.js
+++ b/js/balloons-and-static-electricity/view/WallNode.js
@@ -87,7 +87,7 @@ class WallNode extends Node {
     const maxDeflectedXPosition = 739; // empirically determined
 
     _.times( model.wall.numY, index => {
-      if ( index % 3 === 0 ){
+      if ( index % 3 === 0 ) {
         const xPositionProperty = new DerivedProperty(
           [ model.wall.minusCharges[ index ].positionProperty ],
           positionVector => positionVector.x